Background - Engine is very difficult to start. This time the guage jumped about 15 psi when I placed the key in the run position. Does anyone know what changing the vacume signal to this sensor on the fuel rail will do? Also, are these systems not designed to maintain pressure after the engine is shut down? I was advised to take it to my dealer to diagnose the problem. I have a haynes manual, but its real vauge about where the fuel pressure regulator is on our cars, i have a 2000 v6 stang and was wondering where the fuel pressure regulator is and how its controlled. These cars could possibly catch on fire and explode if this problem is not addressed. Now the same thing is still happening.
I guess the next thing will be to check wiring at the pump. I will fax it to you if you wish. I checked the hold pressure and it wasn't even registering. I had to replace the entire fuel neck to fix the problem. Took the car back and the station replaced the fuel pump again saying the new one was bad as well. Any ideas you might have would be great.
I cycled the key two more times and achieved around 35 psi. I've never installed nitrous so I can't help you there, but there are lots of people who have. A vapor space between the fuel level and the tank upper surface is combined with a small orifice and float shut-off valve in the vapor valve assembly to prevent liquid fuel from passing to the carbon canister. Ford has sent me an email stating that not all complaints get investigated. I'll tell you now that there has to be a right way to do it. Most of this stuff was in dire need since the vehicle seemed to have limited maintenance during it's entire life. First off, Thanks so much for all the info! Took my car in for serves because car would not start on the first try.
The weird thing is that the pressure held. Any info on this would be greatly appreciated. As far as monkeying with the fuel system, its part of the nitrous install, the zex kit uses vacume influence to give the motor more fuel for the nitrous blast. I am the original owner of this vehicle and think it is ridiculous! I didn't plan on touching the wires running to that sensor, just the vacume line running to it, ive learned from friends learning the hard way not to go cutting random wires. I should not have to pay for Ford? I had just filled the tank. Anything else would have probably caused a fire by now as it has to be an external leak then. Had a new one put in and same thing happened.
Am I just missing it? Poor manufacture design with numerous incidents of failure that result in unnecessary high repair costs placed on the consumer. Avoid cranking the starter for too long, or you will burn it up and add the starter to your list of needed parts. I have a copy of the invoice as well as the repair quote from ramey Ford in johnson city, tn. As an update, i found something on the driver's side fuel rail with a small vacume line going to it and like a 4 or 5 wire conector goint to it, i think that may be what im looking for. Just replaced the fuel pump and now it starts and runs at idle only. I'll have to push the car uphill into the driveway before I can drop the tank. I was told the fuel pump needed to be replaced.
There are no external leaks and I changed the fuel filter last week so I know it's good. Could not drive at all. In an overly rich scenario, there is not enough air for the mixture to achieve combustion; if there is too little air, the combustion will also fail to occur. Once started, it may die but will start easier the second time. The valve is mounted in a rubber grommet at a central location in the upper surface of the fuel tank.
I have listened at the fuel filler neck wile wify turned the key. I guess I'll find out when I get under the gas tank. Does anyone know the fuel-pump wire colors of the power and ground at the tank connector? While it will most likely occur while idling, it is not unheard of for the car to stall while you are driving down the road. According to the book there is also some type of pressure relief valve, but I haven't located it yet. Finally hooked up a pressure gauge to the fuel system and may have found the problem. There is a chrome disk inline with one of the rubber hoses going to the fuel rail. Between the manual and input I've received from people I think I've narrowed it down to the pressure regulator, fuel pump or a check valve somewhere around the pump , or possible injector leak I doubt this because of the lean condition, but it could result in a pressure drop.
Smitty Well, I ruled out the regulator by swapping with a known good regulator. It started yesterday so I shut it off, released the fuel pressure at the fuel rail, and put a new fuel filter on. The service technician informed me that the fuel filler neck was rusted out and had a hole in it due to the placement of a shield on the tube. Went to change the thermostat and noticed the manifold housing plastic had a nice crack in it. Ford needs to issue a recall on this immediately. So I hooked the pressure guage back up to see if I had just missed it.
Prior owner bypassed the inertia switch altogether and just connected wires together with elctrical tape. There is essentially a 2 inch hole in the fuel neck! So I started the engine and the pressure held steady at 32 psi. . The shield held in dirt and water which allowed it to rust. Gasoline needs air to burn.
They replaced the spark plugs and wire and now seem to be at a loss to what is causing the problem. Is this also a regulator or is it possibly some type of pulse dampner? A fuel injected vehicle, with proper fuel pressure, will start up quickly, if no other malfunctions are occurring. If we remove return fuel line at the rail and plug it so no fuel can return to fuel tank, pressure remains at 22 psi, shouldn't pressure go way up when you do this? I'm having issues doing diagnostics because I don't even know if the pump normally primes or how to keep it priming so I can test stuff. I'm gonna bump this one if y'all don't mind. I cannot put gas in my car when my children are in it for fear that it will catch on fire. New bit of info on the problem.