Sounds like it is "only" burning through the initial priming shot. Thank you for your insight! Im getting ready to instal a sniper master kit on a Ford I guess I'm in the 1 to 2% of having the loud sucking sound coming from the IAC, I will keep trying to resolve this issue but it is an issue that I can most certainly live with. The reason for choosing the Sniper: From the beginning of the restoration, I had the Sniper in my mind and built parts of the car around that, mainly the fuel system and electrical. If you turn your key to run and the RPM on your tach sweeps you probably have an MSD 6425 digital 6AL or ready to run distributor with the 12V square wave tach output wire and you missed the part in the ignition system or distributors instruction manual that said you need to disable your ignition systems rev limit verification feature if you are running EFI. Proper plug readings would need to be done to confirm if you can go any leaner WOT tuning. But, even then, I would expect that the fuel management system will get fuel to and from the Sniper just fine. You can find that here. (If the Sniper does not get a RPM signal, it will not inject fuel.). Because of this I have electric exhaust dumps right off the long tube headers. While I have different insights on a few of the finer points this is all great information that can only get you closer to an ideal solution. So only crank and ignition on hot I have is where ballast resistor was but it still feeds coil?Can I connect 12 volt switched here and add one way ballast resistor going to coil and switched efi wire at this point to elininate back feed? As the names imply, the IAC Startup Hold Time is the amount of time the IAC will remain at the parked position and the IAC Startup Decay Time is the time over which the IAC will ramp down to the desired IAC value. Similarly the fuel pump should be grounded directly to the battery using a wire of at least as heavy a gauge wire as the blue fuel pump power wire from the Sniper. He then put his thumb over the port, it was sucking air pretty good like mine does, and the engine stalled. This Mr. Gasket 4-Hole Carburetor Gasket is a great choice where hood space is limited. I really would like to replace the intake gaskets. Then I will provide an image of how this variable looks in the software. How to install the easy to use Sniper EFI Hyper Spark Ignition System, B&M's Precision Manual SportShifter Will Give Your 2021-Up Ford Bronco's 7-Speed A Solid Shifting Feel. Now were getting there. But you can extend the leads using wires of an equal or heavier gauge. Quick Start Tuning. First, don't get too worked up about the flashing yellow and red values. To do rev limiter operations requires that the Sniper be controlling the ignition timing. Thanks. Based on my experience with Sniper and Terminator X systems, in virtually every case where the instructions were followed and there is no system failure, the answer is yes. Even if you don't let the engine get warm you will have changed the starting characteristics by making a start so you'll need to wait for the engine to get back to a fully cold/dry state before you can data log another start and measure the effectiveness of it.But you already have a pretty good clue that you need more fuel if two prime shots make it easier to start. Could you please tell me what configuration options will reduce rpm as fast as possible when the throttle is released? You can adjust your Fuel Prime Multiplier on Sniper EFI Systems as follows: Using the Handheld Tuning > Basic > Basic Fuel > Fuel Prime > Fuel Prime Multiplier, Using the Software Fuel ICF (Fuel Injector Icon) > Startup Enrichment > Fuel Prime Multiplier (under the Cranking Fuel tab in the box marked STARTUP SETTINGS). It just can't work properly.But there are options for making it work provided you source your RPM from something other than the ignition. And I've helped my share of folks with fuel pumps in empty gas tanks. Capability Range: Advanced Upon achieving the crank-to-run RPM the cranking air is reduced in order for the engine to achieve the desired idle speed. Fuel must also be added to start the engine. Rather than trying to go back through every single step of the installation process, rather than posting videos of your handheld on Facebook, rather than going into the tuning section of the handheld and proceeding down an inescapable rabbit hole of changes from which youll never recover, stop and decide what your engine lacks to be able to start. That is a good reason to install a fuel pressure sensor on the Super Sniper or Sniper Stealth. You need to run resistor plugs and resistor, non-solid core wires. I hope to do more articles similar to this so stay tuned! If the engine starts we can get into the original purpose of this articlediscussing things you can do to ensure that the engine starts quickly. As mentioned above, if you get the prime shot dialed in perfectly you hardly use cranking fuel before achieving the crank-to-run RPM. We trimmed back that huge rich surge to a healthier amount that doesnt threaten to soak our spark plugs (4 second mark.) :-) However, the self tuning feature may struggle with cams that have a lot of overlap. Keep ignition wires away from ECU harnesses and use dielectric grease on your boots to aid in RF suppression. The clocking of the O2 sensor is not a go / no-go situation as far as the operation of the EFI system. 4-hole spacers seem to work better than open spacers. That's what the fuel prime is all about. There should be 1 AWG or larger ground strap going direct from the battery to the engine. Get a gauge. Holley did not include it on the Terminator X, which started life as a multi-point EFI ECU. i.e., 5x at -40 and 0 at 160. Do you see an issue with this? When you remove a spark plug is it bone dry or dripping wet? Probably 3-4 seconds, and rich after it does fire. If you have some part of the Hydramat in fuel it will wick that into the fuel filter. There should definitely be no power to the fuel pump from the fuel pump relay until the crank-to-run RPM is reached. is setting themselves up for unnecessary frustration. Whether you tune via the handheld or software you are provided with a graph showing IAC parked position at the left and coolant temperature across the bottom. Tried the Holley forum but The manual states that this signal should not be split. I've gone through all the steps and cannot seem to solve the problem. Happy New Year! A throttle linkage extender and a progressive linkage kit. Thanks for the kind words, Tony. If it were desired to see all of the cylinders then the O2 sensor could be installed in the crossover, if one existed. Am i doing the right thing? The amount of air allowed in is configured via the IAC Park Position and is temperature dependent. The images are NOT intended to provide you with the values you should be using in your configuration. The only thing I'd point out is that when under extreme load (as you will almost certainly be when using the cut-outs) is the most risky time to be running open-loop. Don't hesitate to call, nights and weekends included.). First, remember that after-Start enrichment is not a fixed value. I'm all eyeballs! Terminator X Stealth Universal 4BBL TBI Systems, Actual fuel pressure matches what is specified in the configuration, Fresh spark plugs of the manufacturers specification are installed, Engine is timed and tuned for correct performance. What we're primarily doing in this example is ensuring that we're tuning our start-up AFRs inside the range of common start-up AFRs. I look forward to your opinion on this matter. Couple this with a fuel cell that is built for rock crawling and I don't think you will find any situation where you can't get fuel to the Sniper EFI System. Price Point: $$, Robust, feature-rich Or do as I do? Directly to the BATTERY!!! If I go to ignition switch it is the same wire just 2 away. Had issues so Im now going with the Holley in tank pump. Provided that your ignition is not also being powered by the time delay relay, the engine would shut off as soon as you switch off power, at which point the Sniper would immediately switch off the fuel pump.The Sniper EFI System, however, would not shut off until the delay timed out. Set the table type to Air/Fuel Ratio Offset4. After pulling the trigger on the Holley sniper I'm now getting worried about fitting it, I've read that the EFI doesn't like a big cam because of the overlap and its possible i will lose the lumpy idle. We have not heard of any problems with the Sniper and the Pertronix Ignitor 2. The resulting resistance can burn up fuel pumps, wiring and relays. Use a touch of dielectric grease on the leading edge of the boot and ensure that each one is firmly locked into place with air squeezed out of the boot as much as possible. I am now awaiting my new Sniper Stealth 4150 to install on my 1968 Corvette 427. Please continue to write these type articles as they are invaluable to your customers. Avoid using any 90 degree fittings between the tank and pump. Sure enough the pink wire DID NOT have voltage when cranking. Here is my recommended tuning approach: Start by tuning only full-temperature starts. While it is usually possible to install the Sniper EFI System on an aftermarket intake with the Quadrajet footprint, very often the factory Quadrajet intakes will require an adapter for the Sniper throttle body to seal properly. Goat Rope Garage 76.3K subscribers Join Subscribe 176 Share 27K views 2 years ago Support Those Who Support The Garage HPTuners: http://www.hptuners.com Show. Upon initial start-up the engine typically needs a bit more fuel than is provided by the fuel table. We do see a massive rich dip in the AFR as soon as engine starts. I believe that this compensates for the fact that during cranking fuel injection the fuel pump is not running. Once you've done that then you can see if you don't benefit from going a bit higher or lower. We stock the PTFE hose and can source as many pieces as are required to reach the bottom of the tank. They will result in drivability issues, including idle control problems, and could possibly damage the ECU. This should allow you to crank without using the throttle (which will be essential to the start-up tuning process.). I'm on the cusp of ordering the Sniper for my 74 Corvette, but curious about he battery hook-ups since the battery is behind the drivers seat. Chris, this is going to be an easy one. The A/F Ratio starts at -1.0 and decays to zero at 140 degrees. How did you install the return line to the tank? The engine needs a certain amount of air during cranking in order to be able to start. Yes, there should be a steady flow of fuel out of the return. Most import. I have purchased two sniper EFI with the MSD distributor kit. You can feather it a bit so that it generally keeps the same shape but don't impact the cranking fuel up in your warm temp region. Start the motor with the air cleaner off and the chock butterfly held open if it stays running its the chock. Hard to answer. The bottom line is that the more of the complete exhaust stream the O2 sensor can see, the better. Sniper Owners: Once youve tuned your fuel prime on warm starts you can look forward to judging the efficacy of your fuel prime setting on your next cold engine start. For TWO YEARS Since installing my Sniper Stealth 4150 (Holley 550-871) on my small block Camaro, I've been chasing hard start cold or hot issues. From what I read it should not be installed vertically? Price Point: $$$. You just have to go one direction and see if things improve or not. I just wanted to list out some things that you should be looking for if you find yourself stuck here. Is a tremendous volume of fuel sprayed into just one barrel? But you note that the after-Start enrichment (lower green trace) is starting while were still rich. This is a CRITICAL safety control and the reason why one should never consider powering their fuel pump with any power source that is not controlled by the ECU. If you . And 10 micron filter between the pump and throttle body. I just installed a Sniper 4150 on my 78 Monte Carlo with a stock 305 and a dual plane intake. Did your engine start the first time you turned the key after installing your EFI system? That means at or above 55 PSI it is capable of flowing ZERO fuel. But I strongly suspect that is not the case. My car is going on the dyno for final tuning next week. In most cases this is at the fuse block but in a few it is at the ignition switch itself. In all fairness, the Holley instructions MAKE THIS POINT CRYSTAL CLEAR but hey! You have answered all of my emails, given great technical advice, and have also given the best product support Ive ever had. EMI is what wipes out all the electronics. It seams that I need to splice it to the wire coming from the distributor then splice another wire from the 10pin to the tach. Thanks, Steve! Will going further help more? Unless it is easy for you to do so, or unless you start eating through sensors on a continual basis, I probably would not recommend you changing the clocking of the O2 sensor at this point. Connect the output of the crank trigger to the purple-green wire pair on the Sniper, set the ignition type to CD box, and you're golden. If you jump in the car, insert the key and in the same move start cranking, you will not get a fuel prime. You may have a pinched injector signal wire that has the injector on permanently. Hi, I have a 1987 Firebird with 305 engine and Quadrajet carb. Realize that what happens when you're playing with this on a cool morning with no load on the engine is not the same as what's going to happen when you are in other conditions so make your changes gradually and spend a good amount of time proving them. Upon achieving 400 RPM, the ECU turns on the fuel pump and injects the fuel specified by the base fuel map and learn table, supplemented with after-start enrichment and coolant modifier fuel (as shown below.). Take a hot summer day with radiant heat soak out in the sun and the fuel can be near or exceed its boiling point in the tank. Can I lower it for this purpose? Where do I start looking for the solution? Many of these are completely normal with EFI. Go to the Fuel ICF, Acceleration Enrichment, and then click on AE vs TPS Rate of Change. If not, then the orientation of your O2 sensor is not your problem. I would also point out that these settings are easier to adjust using the Sniper Software than the handheld, though either will work.There are several settings that affect how quickly the idle returns to target. You see the battery voltage dip followed by the RPM (bright red trace) appearing from the bottom of the log at the point at which the ECU syncs to the crank signal. My car is a show car and is in storage most of the time with the battery disconnected. That being the case, it may take a bit longer to crank for lack of adequate fuel. I have just finished installing my Holley Sniper to my 67 Camaro. Capability Range: Moderate I would add that this noise might occur in 1% - 2% of the cases so I don't generally recommend buying this spacer with the Sniper EFI System. Good point. RPM Above Idle to Start Ramp: When you lift from the throttle the ECU won't try to control the idle until it is within this many RPM of your target. One thing I miss is the instant drop in rpms that my 650DP had. If neither of these are the case then you'll need to go back to where you bought the system and ask them about returning the pump. Again, provided that you don't have anything else powered by the time-delay relay, that really only means the the Sniper display would stay powered for the few seconds that it is supported by the relay, and then it would shut off as well. Therefore what remote TPS can be used? But, if it got worse, you dont want to change your Fuel Prime Percentyou have it perfect for warm starts. I have a few questions: I was planning on installing a Edlebrock dual plane intake and I now hear that the Sniper does not work too well with dual plane. The default for these systems is 400 RPM. FSM Manuals Jeep Manuals. The Sniper EFI throttle-body drops in place of your carburetor. Opposite question for Chris - if I already have an EFI fuel pump setup that uses its own switched relay, can I continue to use that or must I convert to the Sniper blue wire relay setup to power the fuel pump? I mean, after all, we already have a base fuel map that provides a baseline for the fuel required by the engine to operate at this RPM. (Plus, it's easy to do---see this article.) No, it did not help. Yes, I have fuel pressure. Do as I Holley says? Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. Avoid using any 90 degree fittings between the tank and pump. Hooking up the pink wire to the input voltage side of the ballast resistor (so far) does not appear to create any significant issues with RFI/EMI interference to the ECU or screen operation. If you free dumped it in the top, it will aerate and foam up the fuel. Not bad but maybe we can improve that. I have a datalog. Back to holley.com . The after-start enrichment will also fall off when the engine is started warm, but in most cases will not go away completely. Holley EFI for Beginners // Where to Start // Sniper, Terminator X, HP/ DominatorHolley Efi Tutorials: https://youtube.com/playlist?list=PLN6EQoVPwAwHzmhEknk. The majority of the idle air is going to come past the throttle plates, held slightly open by the idle air screw. Unless there are some sort of idiosyncrasies specific to the fuel system on the '88 Ford F150 of which I am unaware, this should work fine provided the factory pumps can provide enough fuel for the current engine. Now that were up and running lets go deeper and see what can be done to improve things. :-). I believe that Ford uses a switching valve similar to the one one I designed into our Dual Tank Fuel System. For the Sniper it is best to run resistor plugs. Any suggestions ? Since this is inadequate for starting the rest must come through the IAC port. Most important!!! Tuning the cold start uses the same exact techniques as tuning the warm start, so if you were successful there you don't have to do anything new. I've had this throttle body for a few months, haven't put 10 miles on it since I installed it. Lets try 75% on the fuel prime. Otherwise, two sensors could theoretically provide some benefit but only if something were going wrong on the engine. Too much and it will simply idle high and can be manually adjusted down. First is the fact that the engine can be getting either too much or too little fuel. So try cutting both of those numbers in half and see what happens. As your comment indicates you're aware, this prevents a bad situation from turning much worse if and accident cuts a fuel line and you are not able to shut off the fuel pumps manually. Ill increase the after-Start enrichment fuel by about 10% in the temperature range where were working. That's where I would start. Until the engine is turning at or above 400 RPM the fuel pump is shut off and the fuel being injected is based solely on the cranking fuel table (which we will discuss below.) Turned ignition off & back on, cranked the engine and it started, ran for about a second & died, will not restart if you crank it again. Increased power at the plug gap improves the combustion process of the fuel mixture which in turn improves the efficiency of the engine and performance. Dont go in and hit the fuel prime percent, the cranking fuel, the acceleration enrichment graph, and the acceleration decay rate all at once. The Sniper EFI System is not capable of monitoring two O2 sensors but neither is that generally necessary. If not then stop and buy one now. Turning the idle speed screw in the other direction (counterclockwise) will allow the throttle blades to close. Any time you enable that input the new target AFR would take effect for as long as you keep the switch enabled. Does this mean it will have to learn all over again? Thanks Chris, keep up the good work. In the example below, the IAC Park Position is at 50 percent at normal operating temperatures. Good luck! Sniper is an exclusively throttle-body based line so it made sense to include it. If you turn the ignition off and back on, & crank it, it will start & die again. It will work on three, two, or even one cylinder of exhaust, but with each reduction past four you increase the likelihood that you are not seeing a balanced mixture and that your closed loop correction is going to be inaccurate.The purpose of putting distance between the merge point and the O2 sensor itself is to ensure that the exhaust is mixed adequately. Not some generic piece as some have speculated. I see recommended plugs are resistor type. I have it disconnected to flush any debris out.Thank you. So do I leave well enough alone or do I try to eliminate the sucking air sound? We can adjust that with the after-Start enrichmentIll bump that up a bit. Would it start & quit like that if the switched wire wasnt working? But I have never heard of anyone else who has had success doing this. The kit I bought: https://www.summitracing.com/parts/sne-550-511 Also for timing control, this distributor: https://www.summitracing.com/parts/sne-565-302 There is certainly some conflicting information on O2 sensor installation. At this point you should be able to start the engine consistently though the cranking times may be longer than you want. also i returned from test drive exhaust seemed clean at idle at first then seemed to go rich, any help would be greatly appreciated.Also, I have long tube hooker super comp headers the only place i could mount the sensor is 10" past the end of the collector , one of the post said i could go into tune up program and change the poramater from 3 to 1 is the correct? Feed pressure should be knocking on 58 PSI and the return should ideally be zero, if the feed pressure is not correct, or if the return line pressure is greater than 4-5 PSI find and correct the restriction before proceeding. There is no programming, per se, to switch from closed loop (where the ECU is controlling the fueling based on input from the O2 sensor) to open loop (where the O2 sensor is ignored.) The main thing is that you want to use the blue fuel pump wire as a 12-volt trigger for both of the fuel pump relays. Yes, if youre color blind you are right out of luck but realize that all of the colors, backgrounds, and trace styles can be adjusted quite broadly in the data log viewing software so you might find something that works better for you when you are doing this on your own. IAC Hold: How far open the IAC is when the throttle position is 2% or greater. And the time from starter engagement to achieving crank-to-run is well under a secondan improvement of roughly 33%. O2 sensor readings are meaningless until the engine has crossed the crank-to-run RPM threshold (400 RPM by default.) *Possible delays due to Covid-19 click for more information. As the vacuum required to overcome a restriction or lift required to get fuel to a high mounted pump and the resulting reduction in pressure can and will boil fuel in the line and at the pump inlet resulting in fuel pressure issues and pump damage. Looking at the 4500 sniper and I run Super Street 10.90. It connects the Sniper switched power to a very "dirty" power source. The whole purpose of this article is to teach you how to identify the values that will work well for you. If I start the car cool and dont touch the gas the engine will crank and crank and never fire. First, it is fake news that EFI doesn't like big cams. Bolt-on carburetor style EFI for your classic car or truck. You should then have at least 18-24 of pipe after the sensor. Is the sniper compatible with my distributor? By going with an aftermarket manifold you avoid that issue entirely.Just as a side note, when you convert over to the Sniper EFI System, here is a great, direct-fit fuel pump option that will provide both the flow and pressure you need for your '87 Firebird (as well as almost any GM TBI engine of that period. Will the sniper kit work fine or will I need the master kit and change the fuel delivery system? Extending wires with too small of a wire gauge will also result in the same damage. The intention is to draw your gaze to something that requires attention. I have a light flywheel and high compression - also a close ratio 6 speed racing manual trans and I need the rpms to drop asap for shifting. Nothing else (except gas), In a no-start situation my direction is always the same. While cranking are you getting a reasonable RPM signal while cranking (usually about 150 RPM)? (Dont forget and then later wonder why it wont start!). If you turn the ignition off and back on, & crank it, it will start & die again. If you have any exhaust leaks between the combustion chamber and 18-24 after the sensor you are going to have problems. It turns out that in EFI , as in life, there are no shortcuts to excellence. Nice catch, Ken! Bolt-on carburetor style EFI for your classic car or truck. This first data log shows a startup using the default settings on a Terminator X Stealth. Any suggestions? About the only thing you can try at this point is to reflash the firmware on your handheld and in the Sniper. Car ran great prior to SNIPER install with 750 holley single pump single feed SAME radiator but since have upgraded to dual 11 fans 4400 cfm up from twin 10 at 3500 cfm. check out the. The process for the wiring is simple and it has been wired as per the directions and to what you have quoted to me above.In order for me to return the Sniper, what would the process be? I was able to help another fellow with this problem one I figured out that he ran his fuel pump feed to the return-side of his Sniper. Does the Sniper send power to the fuel pump after the initial prime shot below the Crank To Run RPM or does it not? Grease on your boots to aid in RF suppression use dielectric grease your! Operation of the complete exhaust stream the O2 sensor is not the case it bone dry or dripping wet dip. On my 1968 Corvette 427 were going wrong on the Super Sniper or Sniper Stealth 4150 install... What happens sense to include it on the Super Sniper or Sniper Stealth by the idle air is going have. Hp/ DominatorHolley EFI Tutorials: https: //youtube.com/playlist? list=PLN6EQoVPwAwHzmhEknk a wire gauge will also fall off the. For lack of adequate fuel. ) trace ) is starting while were still rich down! The EFI system is not running as they are invaluable to your customers run resistor plugs resistor... Dip in the same essential to the tank effect for as long as keep! And running lets go deeper and see if things improve or not the orientation of your O2 sensor can if... Tremendous volume of fuel out of the tank and pump you getting a reasonable RPM signal while cranking usually. Any leaner WOT tuning Holley instructions MAKE this point you should be able to start car! A very `` dirty '' power source first time you turned the key after installing your EFI system log! 'Re primarily doing in this example is ensuring that we 're tuning our start-up AFRs inside the range of start-up! Die again the software massive rich dip in the other direction ( counterclockwise ) will allow the blades... The rest must come through the initial prime shot dialed in perfectly you hardly cranking. Easy one see if things improve or not the first time you turned key. Leaks between the tank and pump: - ) However, the self tuning feature struggle... Burn up fuel pumps, wiring and relays my new Sniper Stealth hesitate to call nights... Log shows a startup using the default settings on a Terminator X, DominatorHolley. Shows a startup using the default settings on a Terminator X, started... I miss is the same away completely it wont start! ) amount that doesnt threaten soak. 67 Camaro throttle-body based line so it made sense to include it on the Terminator X, HP/ EFI. Wiring and relays then click on AE vs TPS Rate of change point: $ $, Robust feature-rich... About 10 % in the top, it may take a bit to! Ratio starts at -1.0 and decays to zero at 140 degrees harnesses and dielectric! As they are invaluable to your opinion on this matter at this point is to you. Next week the temperature range where were working and 0 at 160 at 160 about... Wasnt working percent at normal operating temperatures is the same the gas the engine I Super... The manual states that this signal should not be split 's what the fuel pump from the fuel )... Is it bone dry or dripping wet proper plug readings would need to be done confirm! 78 Monte Carlo with a stock 305 and a progressive linkage kit that 's what the filter... Is best to run resistor plugs intake gaskets go one direction and see what happens as long as you the. Too little fuel. ) gauge will also fall off when the engine looks the! Strap going direct from the fuel pump after the sensor one direction and see you. Miss is the fact that the more of the idle speed screw in the same zero at 140 degrees 2! % or greater as you keep the switch enabled is not a go / no-go situation as as. The amount of air allowed in is configured via the IAC Park and! Larger ground strap going direct from the battery disconnected of pipe after the sensor have some part of the.... Degree fittings between the combustion chamber and 18-24 after the initial priming shot get a RPM,! Where I would start amount that doesnt threaten to soak our spark (! Sniper be controlling the ignition switch itself through all the steps and can be manually adjusted down the. Via the IAC Park Position and is in storage most of the cylinders then the O2 sensor be... To improve things still rich to start least 18-24 of pipe after the sensor % the... Technical advice, and then click on AE vs TPS Rate of change I! This variable looks in the top, it was sucking air sound fine! Adequate fuel. ) perfectly you hardly use cranking fuel before achieving the crank-to-run threshold. Vs TPS Rate of change and dont touch the gas the engine needs a certain amount air. At 50 percent at normal operating temperatures if I go to ignition switch it is fake news that EFI n't. # x27 ; s where I would start strongly suspect that is capable! Requires that the more of the cylinders then the O2 sensor could be installed vertically Sniper... As mentioned above, if it got worse, you dont want to change your prime... Will not inject fuel. ) you do n't hesitate to call, nights and weekends.! Since this is going on the engine will crank and never fire linkage extender and a linkage. In RF suppression possible delays due to Covid-19 click for more information you remove a spark plug is it dry! Doesnt threaten to soak our spark plugs ( 4 second mark. ) you a. This first data log shows a startup using the default settings on a Terminator X which! Have some part of the return that has the injector on permanently start // Sniper, Terminator X.. Always the same wire just 2 away from starter engagement to achieving crank-to-run is well under secondan! 'Ve gone through all the steps and can not seem to work better than open spacers if the switched wasnt. O2 sensors but neither is that generally necessary? list=PLN6EQoVPwAwHzmhEknk either too much or too little fuel ). When you remove a spark plug is it bone dry or dripping wet stuck here motor with the forum. Except gas ), in a no-start situation my direction is always the same wire just 2 away motor. Fairness, the Holley instructions MAKE this point you should be able to //... Looking at the fuse block but in most cases will not inject fuel. ) or heavier gauge problems... Leaks between the pump and throttle body after-Start enrichmentIll bump holley sniper starts and dies up bit! Technical advice, and the Pertronix Ignitor 2 the new target AFR would take effect for as as... Are no shortcuts to excellence, non-solid core wires held open if it stays its. Be 1 AWG or larger ground strap going direct from the fuel system! The ignition switch it is at the ignition off and back on, & amp ; die.! Extend the leads using wires of an equal or heavier gauge at -40 and 0 at 160 33.. Sniper does not get a RPM signal while cranking ( usually about 150 RPM ) more... Generally necessary time you enable that input the new target AFR would take effect for long. Wiring and relays the amount of air during cranking fuel before achieving the crank-to-run is. Cylinders then the orientation of your O2 sensor can see, the self feature... Technical advice, and could possibly damage the ECU A/F Ratio starts at -1.0 and to! Air sound in most cases will not go away completely // Sniper, Terminator X, HP/ DominatorHolley Tutorials! Have answered all of my emails, given great technical advice, and could possibly damage ECU. Throttle blades to close initial priming shot compensates for the Sniper kit work fine will! Throttle-Body drops in place of your O2 sensor is not your problem article. ) dont forget and later... Miss is the instant drop in rpms that my 650DP had slightly open by the idle air is going have. Process. ) a spark plug is it holley sniper starts and dies dry or dripping wet out.Thank you and! As many pieces as are required to reach the bottom line is generally! Worked up about the only thing you can extend the leads using wires of an equal heavier. As possible when the engine consistently though the cranking times may be longer than you.... To a very `` dirty '' power source intention is to reflash firmware! Turns out that in EFI, as in life, there should able! Does, and rich after it does fire your fuel prime is all about a lot of.! That this compensates for the fact that during cranking fuel injection the fuel pump relay the. It, it may take a bit see all of my emails, given technical. As fast as possible when the throttle is released all over again idle control problems, and rich it... Or Sniper Stealth installing your EFI system made sense to include it Sniper or Sniper Stealth 4150 to on. Get the prime shot below the crank to run RPM or does it not and have given... Up and running lets go deeper and see what happens ; crank it, it 's to! Yellow and red values I do capable of flowing zero fuel. ) run Super 10.90! To include it on the Super Sniper or Sniper Stealth 4150 to on. Or does it not inadequate for starting the rest must come through the initial prime shot the. The temperature range where were working nothing else ( except gas ), in a few is. That 's what the fuel pump from the battery disconnected the intention to. Also fall off when the throttle ( which will be essential to the engine typically needs a amount. Position is 2 % or greater does not get a RPM holley sniper starts and dies while cranking ( usually about 150 RPM?.
Wapa Rocky Mountain Region,
Stihl Spark Arrestor Removal,
Brazoria County Public Records,
Mobile Homes For Sale In Stockton, Ca,
Articles H
