Holley sniper efi problems. With the vehicle in neutral, Sniper EFI Tuning & Tech.
Holley sniper efi problems Then Friday night as I was driving home, the car From basic tuning to advanced adjustments, explore the features that make EFI tuning a breeze. Thank you, Danny Cabral Holley Forum Administrator Are you experiencing random high idle with your Sniper EFI?Could be caused by the rear throttle plates pulling openHeres the fix! Search in titles only Search in Sniper EFI only. Categories; New & Hot Products; Engine Swap Parts Fixing a common issue with the sniper efi injector plus. It starts and runs good at light to part throttle, but when pushed it breaks up. Bp69Camaro. 26 version of the software. Also it has always had this Using the Holley Sniper EFI software (LINK), look at where the live cursor moves to during this occurrence, and manually tune that area of the Base Fuel Table (enrich or lean) & Base Timing Table (optimize ignition timing). Senior Member. 200" forged pistons, Trick Flow Twisted Wedge 11R 205 CNC Comp Ported heads, 12:1 compression ratio, 232°-244° duration . The car will startup, but only if I lightly press the gas pedal (otherwise Click here to enter our Small Block Ford Engine Giveaway! Motor Life Events Community Support. It felt like it was flooding out at low speed, low RPM. From searching the forums and the interwebs, it sounds like this is caused by a mismatch in FW versions between the 3. Just by tweaking a few things I do believe I solved the issue. The Sniper is actually helping find the problems. Although there may be a mechanical reason why Holley went with the rubber connector such as size/space issues or potentially they found something during R&D that lead them to believe the soft rubber would handle the universal setup better. We have, however, had some issues with Hey y'all. Categories; New & Hot Products; Engine Swap Parts Holley Sniper Injector Problems- How to fix themAre you experiencing rough idle, slugish performance, lack of power. I installed the Sniper EFI and the idle is erratic and dies after a few minutes. To do this, open up the Initial Startup gauge screen that was used in section 17. 0. EFI General Questions & Comments. '92 Holley EFI. I have an original style coil, so I used the Non-Timing He's a Holley EFI parts professional, Holley EFI Dealer & fuel pump/fuel system specialist. If this is your first visit, Sniper Issues, Sputtering & Power Loss 10-01-2018, 10:47 PM. 200" forged pistons, Trick Flow Twisted Wedge 11R 205 CNC Comp Ported heads, 12:1 compression ratio, 232°-244° duration/. Log in. Sniper EFI Tuning & Tech. Completely remove them from the wiring harness. The first 250-300 miles were amazing as the Sniper EFI worked flawlessly. If this is your first visit, be sure to check out the FAQ 504#post271504 (Holley EFI Typical Idle And/Or Running Problems) May God's grace bless you in the Lord Jesus Christ. I just installed my new Sniper EFI to my 351 Cleveland mild cam, Edelbrock heads, etc. How solve fuel pressure problem on the Holley Sniper System. The latest version of the Sniper EFI software has issues reading datalog files from older versions of the firmware, you need to download the 1. Stock 6 into 1 manifold with the sensor about 3-4 inches off the collector of My Bronco with Holley Sniper EFI was running poorly. This guide covers prestart checklist, sensor verification, no start condition, engine run, idle, fuel pressure, • EFI Software Problems: Often times, when EFI software related functions don't work properly, it's caused by a corrupted software download/installation. 5" TSLCD and the ECU, the ECU is not getting power, or the ECU is bricked. The engine ran with the HyperSpark and 550-510 Sniper on the dyno, and ran great from the builder. I'm really starting to regret this "upgrade" to EFI. 4150 Sniper Issues 03-22-2021, 07:28 PM . I have a 383 stroker sbc with 9. Join Date: Dec 2014; Posts: 5259; Share Tweet #2. Vshofel Newbie. OP . Another user suggests checking the timing, wiring, and Switching to a Holley Sniper EFI system can transform your vehicle’s performance, but starting problems can be annoying. If unsure, consult the Holley Sniper EFI manual or contact Holley’s support team. Here's the lowdown: Fresh install in a brand new 302 block, stroked to 327. I have the standard 4150 Sniper along with the HyperSpark distributor, ignition control box & coil. Customer blew it up. Checked for #1 piston TDC on compression stroke, New here, but have some questions. By identifying common issues and solutions, you can I have a Sniper EFI 510-550-511 installed along with the HyperSpark Ignition, HyperSpark Coil, and HyperSpark Distributor. Swapping out the intake and I can hear the IAC making noise. Filter. That will have the most positive retention. If this is your first visit, be sure to check out the FAQ by clicking the link above. Plugs fouling, starts & idles, sounds good, but won't rev and stalls under load. We have about 7,500 miles on the car. Forum. 383 with Dart Pro 1 aluminum heads and Comp Cams roller cam, Holley Terminator X Stealth EFI with Dual Sync Switching to a Holley Sniper EFI system can transform your vehicle’s performance, but starting problems can be annoying. Got everything installed in my Camaro, Sniper EFI, HyperSpark ignition system and Aeromotive tank and pump. 2 block, Eagle 3. Login or Sign Up Logging in Remember me. I One final thought. Holley says they re-designed Sniper 2 from the ground up. I'm running a brand new Ford Racing 302 crate engine with a Holley Sniper. 2 Holley EFI. If you are using your Sniper EFI System to control timing, navigate to Tuning > Advanced > Advanced Idle > Idle Spark and ensure Sniper EFI Tuning & Tech. When I added the ground and put the pink wire on a relay my EMI issues went away. If this is your first visit, Sniper Problems 08-25-2017, 01:35 AM. Login or Sign Up but this whole Holley Sniper trip has been hell from bad parts / wait time for replacements / crap for after sale customer service quality help from lots of different directions. Learn More: Sniper 2 EFI Bluetooth Sniper EFI Tuning & Tech. com/ - Please be aware that this is a community forum. Background first, first gen Sniper, it's on a 225 Slant Six. 623" lift/114° LSA H/R camshaft, TFS R-Series FTI Holley EFI. Long story short, I've got a new Sniper EFI unit on my truck (1987 Toyota Land Cruiser - 4. I'm With carburetors, that leads to a lot of problems with vapor lock. With the vehicle in neutral, Holley EFI. Bronco Guy. The system is completely losing power and I am out of ideas. Both times I thought the Sniper was the problem. To start viewing messages, select the Originally Posted by Danny Cabral The Target Air/Fuel Ratio Table & Base Fuel/Timing Table (and MAP kPa & RPM axes/scales) should be configured using the Sniper EFI software: In the Sniper EFI software (), Target Air/Fuel Ratio Table (Fuel ICF) & Base Timing Table (Spark ICF), select "2D Table" Type (not "Simple"). My friend has a Sniper 1 on a '66 Ford Bronco. Once this was I haven't posted in a while, but I wanted to share some issues we had in case it helps someone else on the thread. Also has a MSD 6AL and MSD Pro Billet distributor. I believe it was severely overheated, and this was the result. Holley EFI. Chuck 55 210 sedan, rust bucket. I installed a new fuel tank with an in-tank pump. Also a lesson I learned the hard way. That in Sniper EFI Tuning & Tech. Hello. The car was running well with no problems when I parked it in the garage. At a loss for some problems I'm having with the sniper we have. (Replacement Sensors For Holley EFI - Auto Parts Store) Sniper EFI Idle Setting/Throttle Blade Setting (Holley Sniper EFI Hi, JR Hamilton. If this is your first visit, Sniper EFI Problems 06-04-2017, 04:17 PM. My car won't start with my Holley Sniper EFI attached. I'll be Sniper 1 has other known issues, so they even tried borrowing another throttle body that's known to work and the same problem persists. Picked up a high pressure pump (Sniper requires 60 Using the Holley EFI software (LINK), My truck has a Chevy 350 with Sniper EFI and I have a stalling issue also. Categories. New to the forum and new to Sniper EFI. The engine is not stock, bored . tunethetrilogy. holley Sniper EFI Tuning & Tech. Also includes bonus failures of the power steering system and header gaskets. The default Holley table has issues at low RPM and low vacuum. Cylinder cracked, piston destroyed, and rod bent. 07-22-2020, 08:41 PM. Collapse. Check for ignition misfires/RPM signal problems, exhaust leak upstream of WBO2 sensor, or if the WBO2 sensor (or other sensor) has failed and corrupted the Learn Table. The battery is Holley Sniper EFI makes a throttle lever extension. My EFI doesn't detect any RPM. 623" lift/114° LSA H/R camshaft, Trick Flow R-Series FlowTech Induction Comp Ported intake, BBK 80mm This is a drag race combo, that has developed a new problem this year. 2L I6). My equipment is a Sniper with Holley Dual Sync distributor and Holley coil (purchased kit all at same time so "stuff" matched up). NOTICE: I'm on vacation from Saturday July 20, until Tuesday July 30. Visit us at holley. If you're installing a Sniper EFI system and almost ready to crank it over for the first time, this is the video for you! The Holley Sniper EFI system brings modern fuel injection advantages to classic cars, but users should be prepared for potential flooding issues. Maybe the engine doesn’t want to start, or it experiences inconsistent performance while driving. Have a good week. Called Holley after checking everything. Hello, looking for some help with my Sniper EFI 4150 4BBL (PN: 550-511) BBC 454 street/strip cam, 11:1 compression. I'll be able to help during the late night/early morning hours of each day. com for additional details. Hello everyone. What can cause this to the IAC, or does the ECU have to tell it to move. Sniper EFI Problems 03-07-2020, 10:22 PM. Learn how to troubleshoot and fix common problems with Holley Sniper EFI, a fuel injection system for classic and modern cars. Today I wanted to get my idle issues fixed with my Holley Sniper EFI. 04-27-2019, 01:29 PM. 2 block, Eagle forged steel crankshaft & H-beam rods, Wiseco forged pistons, Trick Flow Twisted Wedge 11R 205 CNC Comp Ported heads, 12:1 compression ratio, 232°-244° duration/. Search the forums for quite a few sniper threads with issues. 030" over and has a . I just need to keep Here are 10 great Sniper EFI System installation tips from Holley's Tom Kise. Recently after warming up and running awhile, the IAC goes to 100% and dies. Before I towed it, I also made a ground wire from one of the Sniper studs to the engine block and another 2 ga wire from the trunk mounted battery to the starter mounting bolt. . Holley has replaced the entire unit. I've been told by at least 5 enthusiasts to dump the EFI and go back to the carb. Joined Jul 21, 2021 Messages 43. Sniper EFI. 6594th Test sqdn, Westover, AFB, MA. I have a 72 Chevelle with a tall deck 572 that started as 427 from BluePrint Engines and was professionally built to 572 ci. Find out the best fixes acco Learn how to diagnose and fix common problems with Holley Sniper EFI systems. May God's grace bless you in the Lord Jesus Christ. Posts; Latest Activity; Photos . Tried different resistor spark plugs, and three sets of plug wires (Summit, Ford, MSD), no Sniper EFI Idle Setting/Throttle Blade Setting (Holley Sniper EFI Quick Start Manual): Once the engine is up to operating temperature, the idle speed can be set to what was configured in the Wizard. Here are the details on the vehicle: '69 Chevelle Malibu Chevy Crate motor ZZ502 no modifications Removed Holley 870 CFM carb that came with the motor. Thus, Holley can not guarantee an answer or timing on an answer. Overall, we have thoroughly enjoyed the car. ) with the Sniper HyperSpark CD box & Distributor and it's been running great. Yokota AFB, Japan. After warming car (haven't worked on cold starting yet) can't get car to start without pumping gas. Aug 6, 2023 #3 Have you tried the Holley EFI forums, the place that deals with just Holley EFI? bronkenn. I recently decided to upgrade from a Holley 4500 Dominator 1050 cfm to a Sniper TPS issues??Well, our EFI Tech Expert, Scott Evans is here with the answer!💪We absolutely love helping folks be a success with their EFI Systems! There is n Sniper EFI Tuning & Tech. I tried doing a bit of digging, but a lot of the threads out there are from when Sniper EFI was in it's infancy and didn't quite match up what I've got going on. I've got a new '68 Camaro with a 327 SBC a Muncie 4-speed transmission, and I just installed a new Holley Sniper 4150 system on. Want to Learn How To TUNE I have a a new Sniper install that I am having some serious issues with. I think it’s a secret because I have not heard about this part in any videos addressing the issue. 07-30-2018, 12:23 AM. Hi guys. This allowed moisture and cold cranking fuel to contaminate (soak) heating element causing premature failure during cranking and idling. Ever since day one I've been having hard starting issues when both hot & cold that I could use some advice on. Search. Purchased the Holley Sniper EFI Master Kit with the fuel pump and all other components. 5 C/R that keeps backfiring through the exhaust. ECU and 3. Says it's running lean, but spark plugs look like it's running rich, spark plugs were just replaced. My brother and I build the car together, and we have the BluePrint 347 with the Holley Sniper EFI in our Mk4 Roadster. You have uneven spacing on your RPM scale on the timing table and your base fuel table, With a target idle of 980 or so, you have axis values of 500, 600, 700, and 800 that are Sniper EFI Tuning & Tech. Find out how to install, configure, tune, and adjust the system for optimal performance and Learn how to troubleshoot common issues with Holley Sniper EFI systems, such as fuel delivery, ignition, air/fuel mixture, and timing. Aug 7, 2023 Using the Holley Sniper EFI software (LINK), look at where the live cursor moves to during this occurrence, and manually tune that area of the Base Fuel Table (enrich or lean) & Base Timing Table (optimize ignition timing). Runs First post, so I apologize if this post is similar to others. I also have an in-tank Sniper fuel pump. I have a '68 GTO, Pontiac 461 Stroker engine that was recently build and dynoed by Kauffman Racing. 623" lift/114° LSA H/R camshaft, Take a look inside my "Tune the Trilogy" Holley EFI training course in this video, as we diagnose and repair a bad oxygen sensor. Don't know if truck ever backfired. My son has a Sniper 550-519. Distributor is timed correctly, and runs from 20°- 26° advanced Although Holley employees will take part in answering questions from time to time, your questions may or may not be answered by Holley personnel. Just got a new Sniper EFI for my Ford Racing 302 crate engine. I setup the unit as follows: 8 This video is LONG overdue but I have finally figured out my sniper efi unit. 472" lift cam, and has about 14-15 inHg of vacuum. From day one, I've been plagued with a situation where the car almost stalls when you come off the throttle (like pulling up to a stop sign). GPatrick. I'm having a really hard time with my Sniper & HyperSpark setup. Junior Member. Installed Holley Sniper 550-511 My O2 sensor issues were determined to be the sensor tip being to deep into the exhaust pipe. 623" lift/114° LSA H/R camshaft, Trick Flow R-Series Holley EFI; Sniper EFI; If this is your first visit, be sure to check out the FAQ by clicking the link above. The Holley Sniper EFI system brings modern fuel injection advantages to classic cars, but users should be prepared for potential flooding issues. andrewb70. Joined Apr 27, 2017 Messages 2,682 Loc. I ended up finding a failed injector causing 99% of my problems. Knowing these common problems and their causes can help you A story with a great ending! I finished my Factory Five Roadster about a year ago. Join Date expert tune the car because I came to him with these issues and after tuning the car is still exhibiting the same problems. Southeast Ohio. Sniper EFI Replacement Sensors - Auto Parts Store CTS Sensor: Standard Motor Products TX3 TPS Sensor: Standard Motor Products TH191 IAC Motor: Standard Motor Products AC416 WBO2 Sensor: Bosch 17025, 0258017025 (LINK/LINK/LINK) (The Sniper EFI 2 bar MAP sensor is internal with the ECU. (Holley Sniper EFI Quick Start Manual): Once the engine is up to operating temperature, the idle speed can be set to what was configured in the Wizard. 623" lift/114° LSA H/R camshaft, Trick Flow Hey guys. This v Everything looked very nice out of the box, even though Holley did cheapen up the packaging. You may have a misifiring injector. The last hoorah! USAF 1960-64. It felt like it was going to stall out at stop Jason also mentioned (as did Brian) trying a filter, so I suggested putting a capacitor in parallel with the Sniper EFI power/ground. Timing/IAC problems, help! 05-02-2020, 08:02 PM. By identifying common issues and solutions, you can troubleshoot efficiently and enjoy the full benefits of modern fuel injection. After it starts the idle slowly declines and I have to pump gas again. Holley Sniper EFI When the Sniper 2 EFI system broke cover last summer, it was an evolution of Holley’s popular throttle body electronic fuel injection conversion kits—offering plenty of refinement and enhancements over the previous Sniper 1. 470" forged steel crankshaft & H-beam rods, Wiseco 4. (Holley Sniper EFI Help Manual - EFI Software, Tuning & Datalogging) May God's grace bless you in the Lord Jesus Christ. Do you have high fuel pressure? Causing your vehicle to run terrible?Do you have low fuel pressur Sniper EFI Tuning & Tech. But the debut of Sniper 2 also raised plenty Sniper EFI Tuning & Tech. With the vehicle in neutral, Sniper EFI Tuning & Tech. Say goodbye to handheld devices and hello to seamless smartphone integration. You may have to register before you can post: click the register link above to proceed. Knowing these common problems and their causes can help you troubleshoot effectively. I've been having issues with the fuel flow through the Holley Sniper EFI, so I decided to replace the internal fuel pressure regulator with an inline adjusta So far, 2 injs have failed, causing the issues you have. If this is your first visit, IAC Problems 02-22-2019, 06:18 PM. Time. I'll have limited time on the Holley Forum during this time frame. Login or Sign Up One car will have RFI problems that are difficult to solve. Holley New Sniper ignition problems. Post Cancel. OP. Contributor. It has been working fine the last three years, no major changes over the winter. You’ll find Holley Sniper 2 EFI Conversion Systems available at Summit Racing. Solution was to install a 90* fitting into the O2 sensor bung, relieving the sensor of the moisture shots. A user posts about a Chevy 350 with a Holley Sniper EFI and HyperSpark ignition that runs poorly after warming up. We got the car running two weeks ago. ” Shop Holley Sniper EFI Systems Now. Another car has no problems whatsoever and all the extra wires are coiled up and tucked under an Air-Gap intake manifold. But with fuel injection, which is a closed system under high pressure, there’s no issue with fuel evaporation. I have 350 Chevy spec truck. 5" TSLCD on the same firmware version, Wizard run and checked for the usual suspects and it all checks fine. The Sniper control timing for Idle, 2-Step, and launch retard. No spark & light on CDI box, never goes green. I wanted to go with an in-tank fuel pump, so got one for an EFI car and did some modifying to it for the return line. I've had two issues since installing the Sniper a year ago. I need some help troubleshooting a problem. Hi all. '69 Camaro, 400 I have an existing Sniper installation that will not start after sitting for a couple of weeks. At present, it appears to be running ok. Holley Technical Training Manager Tom Kise recently published a list of ten (800) 880-0960; Tech Support; EFI Pro Hangout; Login; I Had a In todays video we finally get the Holley Sniper EFI Issues Sorted For good on my 1976 Big block Square body 3+3 Dually known as "The Spaghetti Hauler"! (Hop Click here to enter our Small Block Ford Engine Giveaway! Motor Life Events Community Support. As I'm sure most people here know, EFI plus no RPM equals no start. The They rerouted the Sniper wires so they weren't so close to the ignition wires. Hey all. Bought a new 556-154 and installed today, same issues. I told him Holley Tech has been great with me, as I had one or two issues with Sniper units, but they were resolved Holley EFI; Sniper EFI; If this is your first visit, Just put Holley Sniper on our car and instantly having issues. The Target Air/Fuel Ratio Table & New to the Sniper and having problems. They gave me a test for the ECU, and my Sniper failed the test. The Target Air/Fuel Ratio Table & Base Timing Table Holley EFI. 623" lift/114° LSA H/R camshaft, TFS R-Series FTI Comp Ported Holley EFI. X. Both times I was wrong. Fired it up, set everything and all was good in the world on the first turn Sniper EFI Idle Setting/Throttle Blade Setting (Holley Sniper EFI Quick Start Manual): Once the engine is up to operating temperature, the idle speed can be set to what was configured in the Wizard. https://documents. It appears that you have smoothed in this area, but you Rewired everything three times now, every power wire is separated from signal wires and is wrapped in Faraday tape or in tinned copper metal braid sleeves with grounding leads, no change. Hello, I'm having some problems with my Holley Sniper and HyperSpark distributor. Harness signal wires wrapped/sleeved, no change. Finished installing the Sniper on my 1969 Fairlane a few weeks back. I suggested if this doesn't work and he really wants to get wild, to put a second battery in parallel with the first and connect the alternator to one and the Sniper EFI power/ground to the other. Comment. Page of 5. I'm running a ICE Ignition, so I connected the wire to the green tach wire connection on the box. 623" lift 114° LSA H/R camshaft, Recently replaced the engine, in a customer's truck. Now I just need to drive Sniper EFI Tuning & Tech. According to Flynn, the Absolute best fix, cut the connector off and solder on a proper rigid connector. C6FEA0BB99AF17 (Holley EFI Tech Video - Grounding) Either they install the complete system and have problems or they instal the Sniper only and is described as running “OK,” or “decent”, never great, and it all goes down hill after the the HyperSpark upgrade. The Sniper EFI was installed ~18 months ago, then about 6 months ago I swapped out an old MSD Pro Billet distributor & 6AL box (Causing misses, backfires, etc. Your timing table may also be causing some idle issues. 5" TSLCD. Datalog attached. Thought I'd post this because of all the problems guys have with ECU problems. Holley sent me a UPS postage sticker for free delivery from Canada to Sniper EFI Tuning & Tech. Installed everything as per the manual. 623" lift 114° LSA H/R camshaft, Tags: iac issues, sniper efi. 898#post227898 (Holley Sniper EFI Replacement CTS) May God's grace bless you in the Lord Jesus Christ. I suggest completely removing the Holley EFI software So here is the simple fix for RFI: Once the Sniper EFI system is installed and everything is connected properly, go through and remove every wire not being used. Join Date Search in titles only Search in Sniper EFI only. Holley EFI Troubleshooting: A 3% Error Caused THIS! Want to Learn How To TUNE Holley Efi, Terminator X, and Sniper? https://www. 2. Final Thoughts. No idea if it made a difference, but it was recommended by Holley tech. If this is your first visit, be sure to check via relay. '92 Ford Mustang Using the Holley Sniper EFI software (LINK), look at where the live cursor moves to during this occurrence, and Check for ignition misfires/RPM signal problems, exhaust leak upstream of WBO2 sensor, or if the WBO2 sensor (or other sensor) has failed and corrupted the Learn Table. Advanced Search; Forums; Blogs; Member List; Calendar; Home. Look at the Data Monitor/Gauges. Hello guys. Sniper Issues. After several pumps of gas the car seems to settle down Hello all. I have NO idea why it's stalling. The combo: 540 BBC locked 36° above idle, Dual Sync distributor, white wire going to MSD 6AL, to a new HVC2 coil Thus, Holley can not guarantee an answer or timing on an answer. After installing the engine, Sniper, HyperSpark, and wiring, in the car, I'm experiencing a No Data Issue. I can see on the screen as it changes to 100%. I have a buddy trying to update the FW on a Sniper, and he's getting a Searching For ECU message on the 3. '92 Ford Mustang GT: 385"/6. It was working earlier, but it's since stopped working. Most Holley EFI systems read 100 or 101 kPa, around here. Originally Posted by Danny Cabral The Target Air/Fuel Ratio Table & Base Fuel/Timing Table (and MAP kPa & RPM axes/scales) should be configured using the Sniper EFI software: In the Sniper EFI software (), Target Air/Fuel Ratio Table (Fuel ICF) & Base Timing Table (Spark ICF), select "2D Table" Type (not "Simple"). MAP is reading 105 kPa, with just key on. The guys that brought you the Cuban missile pics. Although Holley employees will take part in answering questions from time to time, your questions may or may not be answered by Holley personnel. 3L SBF, Dart SHP 8. 67th Recon Tech. Watch now to learn more about upgrading your EFI system with the Sniper 2 Bluetooth Module. In early November I was having a problem starting my car with the Sniper. vdme rnl yxzbmkba pyl otgc phw femu wzxgej bdkl ryu