what would be ways to release fuel pressure

[pahua1997]

Hi every one I'm a newbie first car, and no experience. I have a 4g63t fwd and car is down I had a knocking noise coming from the engine wanting to get experience by doing the work my self. Want to take the engine out and need to release fuel pressure but have no idea how, I've looked for videos and nothing. All though I saw a video on a different car that it is possible to release it from the fuel filter but can't seem to do it. Any help guys. Thanks

 

[gofer]

Remove the back seats and the cover over the fuel pump hanger. Disconnect the fuel connector plug and start your car and let it die, you'll lose all fuel pressure in the rail.

 

[pahua1997]

Thing is car don't have a battery and the oil was drained, I've had it sitting in my back yard for a while know and the engine has a loud knocking sound

 

[97_4g63t]

You shouldn't have any fuel pressure. The lines are going to have fuel in them but not pressure. Pressure bleeds off after you turn the car off. I would recommend getting a Chilton to help you with the pull and rebuild. Oh and start you a build journal.

 

[pahua1997]

That's great news thanks guys.

 

[97_4g63t]

I looked into it a little more and apparently it's quite common for fuel pressure to drop off rather quick but it's not supposed to. Yours has been sitting for awhile so I would think you would be good. Just use a rag or something to block it just incase there is any pressure. Gas is some bad stuff especially if its in your eye.

 

[gofer]

The pressure doesn't bleed off when the car is shut-off, that's incorrect. But, if the car has been sitting for a long time then there is more than likely very little to no pressure in the lines.

Your car should maintain some fuel pressure in the rail even after turning it off, if it does drop then you've got a leaky injector, leaky valve seat in the fpr, or the CV in the fuel pump is open.

If you can't start the car to release pressure I'd do it on the side of the rail, coming from the fuel filter. Just have a rag and wrap it around the fitting to keep it from potentially spraying if there is pressure...

 

[pahua1997]

Sounds good I'll have to check up on it I'm out off town for a while though just getting ideas right now I'll see if that works though thanks :thumbup:

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