Checking my FPR

[Turbo6Smackdown]

What if I put a vac tester on the vac port of my FPR and squeezed. Am I checking anything by doing this?

 

[earlbrown]

Fuel pressure should drop proportionally to the amount of vacuum you apply.


I guess it would be neat to watch but it's really not a test of any sort. (plus you'll have to do some conversion. Vac gauges are usually in inches Hg and fuel pressure is in pounds per square inch)

 

[SHADOWII]

What is it you are wanting to check? You can check how it responds to the vac. and the pressure, if you have a mighty vac. If it's a smooth transition or not.

 

[Turbo6Smackdown]

I want to see if there's any leaks. Or anything for that matter. I can't seem to fix the problems in this car. It drinks gas and meth way too fast, and a few nights ago, for the first time, I stood there and watched my fuel pressure gauge just leak down and start to lose pressure with the key on. With the key on, engine off or on, it pegs to 40 even and stays there. It'll stay at 40 for hours after I shut it off too. Been that way for a long time. Maybe a year. But not Saturday. The needle was slowly going south and I have no clue why. Now I can't replicate it.

 

[Mike Licht]

you may have had something stuck in the seal of the reg or the check valve in the pump that is clear now

 

[Turbo6Smackdown]

Would this be something that I could see with my eyes? I mean if I yanked the FPR. If it dislodged itself, where would it end up? In the regulator or what. Rail? Injector?

 

[Mike Licht]

back in the tank, very small just enough to keep the reg or check valve form sealing