Saturday 24 September 2011

How to release the fuel pressure in a 96 cavalier? for changing the fuel filter?

Hello, I plan on changing my fuel filter and I pulled the fuse out for the pump and it idled for about a half hour and then I had to shut it off because I didn't have anymore time. How long does it take for the fuel in the lines to be burned off after you take the fuse out or is there a different way? Thanks.How to release the fuel pressure in a 96 cavalier? for changing the fuel filter?Just start to take the line off and let what's in the line drain out, that's all I ever do. Just make sure to catch the fuel in drain pan of some sort so you don't have a puddle of flammable fuel laying there.
How to release the fuel pressure in a 96 cavalier? for changing the fuel filter?
At a low fuel rate like Idle it can cause a siphin effect. But if you rev it up you will burn the gas out at a faster rate and it will sputter and die. You cannot get everything out. You can also take off the gas cap. That will relive any pressure that might be in the tank. Also you may have pulled the wrong fues dubble check.
How to release the fuel pressure in a 96 cavalier? for changing the fuel filter?
Pull the fuel pump relay in the underhood relay/fuse box.



Crank engine for a few seconds and let it dry out.



Pressure is gone.



I hope you just pulled the wrong relay if your car kept running, otherwise, you have other issues! Like elctrical issues.



Also, pulling the gas cap does nothing to help you as the fuel in between the pump and the injectors is what is under pressure. Not the fuel tank.
A 4 cylinder may run a long time before the pressure goes down enough to kill the engine.You may have pulled the wrong fuse. Listen near the tank to hear if the pump is running when you turn the key. Might need a helper here.



There is a fuel pump kill switch that activates in an accident. It may be in the trunk. Look in the owner's manual if you have one. Hit it with your hand and the reset button will pop up, shutting off the fuel pump. Press the reset after you are done.
go under the hood and find the fuel rail...on the fuel rail the is a schrader valve..it looks like a valve stem for a tire....take the cap off and press the valve core with a skrew driver...this will releave the pressure.....gas will still be in the lines but not under pressure so it will drip out....make sure the car is off befor pressing the valve core
Cover the line with a rag and crack it open . Quick and dirty way