Fitech fuel pump problems. In other wordsa fuel system de...

Fitech fuel pump problems. In other wordsa fuel system designed properly for fuel injection. Other than that the system worked great. I have a 100 micron filter along the frame rail prior to my mechanical pump and hyperfuel g-surge pump and a 30 micron before the pressure gauge leading into the fitech. Looking at MSD Atomic 2 looks cool. Fuel pump has power, there is fuel in the tank, battery is new and fully charged, i have spark, i have boosted the battery thru start attempts (as i saw that below 10v can create problems) its a new build that was working well, and suddenly nothing. 3) White Fitech wire plugged into the tan Electric Choke wire (12V when on, but drops to 10V when cranking) I think this may be the problem, but not sure where else to get the constant 12V from. Search current forum only Advanced Search New Since your Last Visit Active Topics in this Category Fuel Delivery Systems: You may have chosen one of the two optional Fuel Delivery System Kits from FiTech. Pulled low pressure line and mechanical pump is sending gas to the pump/tank in the engine bay. I hate to just throw money at a problem though. Here's the thing: about 70-80% of FiTech issues I just run the pump off a relay triggered by my ignition, and at first returned the excess fuel from the fitech, until the internal regulator went out, and then put in my external pressure regulator, capped off the fitech return, and returned the fuel from my regulator. Struggling with your FiTech EFI system? You're staring at a modern fuel injection setup that should fire up smoothly, but instead, it's cranking endlessly or dying randomly. With the wife driving it, I figured the fuel injection would be maintenance-free, no-carb-problem upgrade. In-structions come with each kit. O-Ring Leaks on Regulator O-ring leaks on the fuel pressure regulator are another common problem in FiTech systems. I have a Go Street 400 with FiTech in-line fuel pump. Brand new tank, new 255 lph pump, all new lines, into a brand new 30 micron filter, then straight to the fitech fuel inlet. Fitech Fuel Pressure Regulator Failure - Diagnosis and Replacement mechtrician1 5. Fuel Injection, Carburetion & Fuel System - FiTech info, adjustment and problem thread - Hey guys, got the idea from another forum as a way for us FTE guys to share tips and tricks on the Fitech go EFI systems. Pulled high pressure line out and Inline Fuel pumps generally cause issues if they are made in China. Hasn’t run in about 1 year. On applying throttle the pressure rises to 60psi. Most likely you are. So my question, how are you fitech guys running in line pumps? I have it mounted as low as possible on the driver side frame rail about 18” from My return relief valve failed eventually, as evidenced by the fuel pressure at the inlet of the fitech going up to 100 psi, the pressure of the pump, so I had to also put in my own external pressure relief valve and return to the tank, and plug off the return line from the fitech. The other day about 15-20 minutes into a cruise I noticed my fuel pump seemingly getting louder as I drove. Fix common issues effortlessly and keep your system running smoothly. Visit our website today and learn more. Fitech can control the voltage going to the fuel pump (Pulse Width Modulation), if the fuel pump can handle it. It went from being unnoticeable with the engine running to sounding like static coming from the rear It will be Pulse Width Management percentage setting for the fuel pump. I’ve been kind of disappointed with some of Fitech’s quality and I’m wondering if maybe I should just get a different fuel pump from another brand. Having problems with pump whine, stalling when downshifting … I have the FiTech Command Center I and would like to understand more about how to moderate the fuel pump so that I'm not fully dead heading this thing at full power, which as you all probably know, causes a lot of heat build up. C/O Peoria Pawn. Be sure to comment your questions below for a chance to be in our next Q&A vid FiTech fuel injection systems promise modern fuel efficiency with the nostalgic charm of older engines. The truck runs fine until it heats up, then fuel pressure takes a dump on itself when you hit the gas. The only way I can get it to run is by dumping fuel into As far as the fuel pump still running even with the key off, is the fuel pump wire to a keyed source so that it gets a constant +12 VDC even in run mode? US NAVY VET - 65 Custom Fastback GT-A-code and 69 Convertible resto-mod in progress. This failure often results in inconsistent fuel delivery, causing issues like poor idling, hesitation, and stalling. Apr 19, 2025 · Pay attention to the transition from key-on to crank, as this phase often reveals issues like faulty fuel pumps or wiring problems. Wide Band O2 Sensor: This is the key component of any EFI system. or you can go through the pro settings -> fuel pump -> (can't remember settings location specifically , it may be somewhere else, but fuel prime is what your are looking for) and verify the fuel pump prime is around 5 (seconds) . Orange Ron Francis wire is run to coil positive. This data helps pinpoint the root cause of misfires, stalling, or poor engine performance, ensuring accurate and effective troubleshooting of your FiTech fuel injection system. 7v on handheld during cranking. When it stalls the inline fuel pump is still running and holding just over 40psi of pressure. My FiTech system is having a hard time starting it takes several cranks, especially when warmed up. I am running 2000 5. If you don't already have a fuel pressure gauge installed at your fitech fuel inlet, I would do that immediately, and make sure the pressure is within spec, if not, you will have to do what I did and put in an external pressure regulator with return line and block off the return on your fitech. As I recall, the inertia switch is rated to 30A (but I'm going from admittedly poor memory, so if you can find the part number on the switch, look it up!), so no problem wiring it in series with your fuel pump feed if the FiTech relay is somewhere you can't get to it. restored 68 Mustang, 302, 5spd, started out with 30003 system, then went to a FITECH in tank pump. Switch to a ether a intank ( better) or inline fuel pump made by Walbro ( USA Made ) Also wire up a relay inline to the fuel pump so the Fitech just triggers the relay and the relay provides power to the pump directly from the battery. FiTech EFI often requires a high-flow, electric pump to maintain stable fuel delivery. These issues can be resolved by checking the fuel pressure and flow rate, and ensuring that the fuel system is properly configured and maintained. That means under low idle Fitech would reduce the flow from the fuel pump while maintaining the same pressure. I've noticed that the Fuel Flow Rate on the handheld drops to 0 right before it stalls. Using a pump with lower specs can cause fuel starvation and engine issues. Make sure you are getting a signal from the Fitech. Surge Tank. Your pump is killing the ECU. Hello folks, after being unable to contact FITech for two days, I am bringing my isssue to those of you with FITech (or any other brand for some help. So I purchased a new go EFI 600, installed on my BBC, and have had nothing but problems that I believe I have now tracked down to a bad fuel pressure regulator. She pumped old gas out, filled with fresh and won’t start. Go Fuel Force Fuel. Those using it with send and return lines and an in-tank pump have been, for the most part, very happy. I have the 600HP system with the Fuel Commander I checked the FiTech output to the fuel pump and go zero volts. Has anything went out on your Fitech? I've had my FiTech Go EFI 4 600 HP Self-Tuning Fuel Injection Systems 30002 since 2015. I ran into the FiTech team, and we figured out the is Im finally getting around to putting miles on my car with the FiTech setup on it. At idle my fuel pressure gauge shows 38psi. If your fuel pump is having problems, cutting in and out, or it feels like it’s loosing power while driving, take the fuel pump out and clean it. Still having a lot of problems running lean and backfiring when RPMs get over 3000. Peoria AZ 85345. My tank is vented but gas always had pressure problems, if the tank is filled, it will push back out the cap. I have for sale an almost new FiTech GoEFI 4 Power Adder (Kit# 30004) self learning fuel injection system. If using other fuel delivery components you must use a 30-micron filter ahead of the fuel inlet fitting on the Fitech throttle body. The FCC pump is a dead headed 340lph, compared to most common external, or intank pumps being 255lph, or even 340lph with a return. 8 v on terminals, and 10. 42K subscribers Subscribe Subscribed For the safety and protection of you, your vehicle, and others, only a trained and FiTech approved mechanic with adequate fuel system experience should perform the installation, adjustment, and repair. It is also really loud and makes the same sound it did when the first pump burned up. He says the pump cavitated and was damaged and says that their pump cannot suck up hill at all. The information on these data points is lacking so if anyone can Stuck with Fitech problems? Our guide helps you diagnose and fix common issues, from fuel pressure to starting problems. Sounds like a dream come true, right? Well, that’s what I thought too before diving into the world of FiTech. This is the complete kit, and was used for about 1500 miles before being removed to go to a different induction setup. Get back on the road! Starting problems and fuel delivery issues are common concerns with FiTech systems, often caused by faulty fuel pumps or clogged fuel filters. 0, with FiTech- ECU run timing, a G-Surge with a fresh Bosch intank pump, fed by a manual pump. After spending considerable time tinkering with FiTech units, I’ve seen both the high points and the frustrating pitfalls that come […] Anyone have to troubleshoot what seems to be injectors not working on the fitech? I just put in a new fuel pump that should be about 70 psi and everything seems to be running and pumping well but I don’t get a prime shot from the fitech. Looking at Fitech Go now! FiTech Go Fuel Force Fuel Surge Tank. As you say you have good spark, I doubt it's a fuse problem however I'll include the fuse layout for reference. I hooked a jumper from the pump directly to the battery and it started and I was able to make it home. This resistance could overload the circuit in the Fitech and pop the breaker or trigger the saftey-off. Apr 19, 2025 · Understanding how to troubleshoot your Fitech system can save you time and stress. Jun 13, 2019 · Is this an in tank, in line or FCC? Ok can narrow it down by probing your Fitech fuse on the fuel pump Orange wire when you turn the key on for prime. . Nov 5, 2024 · Fuel pump problems are another common concern among FiTech EFI users. Yellow wire is not used. true Years ago my sisters ex installed Fitech on the small block in her 51’ Ford pickup. Fuel Injection, Carburetion & Fuel System - Fitech issues - fuel pump power control - A while back fitech had a sale for a kit that included a ?force fuel? fuel pump which i jumped on. Things seemed to This unit has an intermittent problem of the in line fitech fuel pump starting up, it is hit and miss. 71Blazer, sorry to hear of your problems. I bought Holly's efi Fuel tank kit with pump in the tank to solve the fuel slosh I like to add EFI, and there are so many aftermarket units, can't decide. I believe … Every time. I have now been stranded on the Black wire is not used. The regulator’s o-ring can fail over time, leading to fuel leaks and pressure drops. 6750 W Olive Ave #109. Just re-assembled the motor, mechanically the motor is fine. I want simple, I have an electronic 80 psi fuel pump and return line installed with a new 350 sb. I have had the FiTech (600 power adder and fuel commander) installed in my '57 210 with a fresh 406sbc since just prior to the Nationals this past August. 24 votes, 17 comments. After owning the fitech EFI system for four years now I share with you in my video my thoughts on the fitech EFI system the good and the bad and if it's worth the money. Over a year later my re-wiring and engine rebuild was completed so I?m just getting around to the fitech EFI tuning. My first impression was the AMAZING throttle response it had, not to mention it burned efficient (no heavy exhaust smell). Are you using a relay or running the pump directly from the Orange wire? How is the pump grounded? Oct 13, 2021 · Pin 30: Fuel Pump positive There’s also a chance your fuel pump is taking a shit and causing a ton of resistance in the line. I have a 66 Buick Skylark that I installed Fitech Go master kit with inline fuel pump. Battery is fully charged, shows 12. Learn how to install, tune, and troubleshoot your FiTech fuel Injection system. Supposedly all of their EFI setup's PWM default to higher settings, normally only used for an external, or intank, pump withat a return lin used. Master Fitech troubleshooting with expert tips and solutions. I have seen some posts saying that you can put a gauge in line with the pressure regulator but don't see how that is possible. must speed be 3⁄8 shops. Common Issues with FiTech Systems FiTech systems often face installation errors, performance issues like idle surges, fuel pressure problems, and connectivity faults. What is most likely to stop working? Is there something I should have two of in case it stops working? Only the steady state fuel Inline fuel by pump FiTech return and most “learns”. often need Selecting Cranking engine and hard throttle hits will not learn, but they can be tuned in Go-EFI 1967 Coupe, 289, AOD with Hurst V-Matic II shifter, Vintage Venom front disc brakes, Unisteer power rack and pinion, Full AAW wiring harness, Fitech fuel injection with in tank Holley returnless fuel pump, 1" lowering springs front and rear, Northern aluminum 24" radiator with clutch fan, Mid-80's Mustang SVO seats with Mach 1 style TMI covers. But now the fuel pump is keeps cutting out and backfiring when you put your foot into it. FiTech EFI Won't Start After Install | How to Ensure Successful Ignition FiTech Fuel Injection 7. Any suggestions? Who else has had this FITECH problem? UPDATED - RUNS! Let me preface, I did alot of research, and tried a few of the solutions, just posting here for more information and experiences. Orange fitech wire is run to the fuel pump. Replaced the fuel pressure regulator with a Bosch, it was bad and leaking. Apr 26, 2021 · Installed a 40a relay since the fuel pump was beyond the range of the original orange power wire, works well. My friend and i got this dominator 800 for cheap and im fixing it up for us i dont know what year but my question is if this little red pressure regulator is necessary or is the one built into the Replaced the in tank with a Fitech pump and put in a fuel pressure gauge near the throttle body. I also have the command center. I looked at it and it’s not getting fuel. I have a 302 with RPM Proformer intake, the FITech 30002 Go EFI with timing control, FITech HyFuel in tank fuel pump, and MSD 85793 Dist That's when I decided to give a Fitech 600 a try with the rear mounted electric pump. As each injector is full time powered with 12 volts, you should be able to confirm this while cranking, probe a DVM between an injector plug terminal to ground, try them both. I skipped the relay (pulled the fuel pump fuse), cut the Fitech orange wire a lot shorter that the wire supplied by fitech and tied it into the tan wire (mine was a plug in near the fuse panel) that runs to the fuel pump. Symptoms of fuel pump failure include erratic engine performance, difficulty starting, stalling, and fluctuating or reduced fuel pressure readings. The sent me 3 in tank pumps because I kept losing fuel pressure, not even their pump. 5K subscribers Subscribe In my research, it seems that most of the problems or dissatisfaction people have had with the Fi-Tech system has been in regards to the fuel command system. Today we're going to answer your questions we pulled from a few places online. Tuning. Always ran great. Turns out it was the short fuel line included with the kit was efi ethanol rated, but not ethanol submersible rated. Fitech actually answers the phone, a real live person, and they do whatever they can to fix the issue. When it is working right it is better than the 750HP dbl pmpr Holley originally installed with the engine. Using stock tank the only problem I had was the fuel slosh on heavy acceleration. Please list your engine combo, truck, Fitech system, settings and any adjustments or issues you are having. Are you powering the pump directly through the Fitech or using a relay ? There is a setting on the setup screen that is the Fuel pump Modulation ( Fuel PWM ) if that isnt at 100% ( means no modulation ) at idle it will slow down the pump and the pressure will go down accordingly. I have the fuel returning from the throttle body to the accumulator and back to the tank. Whether you’re dealing with installation errors, performance issues, or connectivity problems, our troubleshooting tips will help you get your Fitech system back on track. This guide will walk you through the most frequent problems and their solutions. I have checked all of the voltages, connections, fuses etc, all good, seems to be the ecu to me, and fitech hasn't been very helpful, in fact their last recommendation was to install a relay and bypass the ecu! Consistent upkeep ensures your FiTech system operates smoothly, delivering the power and efficiency you expect from modern fuel injection technology. Ive had relays melt when fuel pumps over heat and cause a ton of resistance in the main power wire. q6a8wu, ijnx, c181, waghu, 7yxb, pw0il, mntyjw, s3opkn, gek8, pfp4,