Resolved what could make fuel pressure be at 80psi

[chenk18]

I first noticed it was so high because I failed the emission test here. My fuel is at 80psi. I can adjust it down to 60psi with my afpr, it is a full throttle speed one from years ago if it matters, with the screw all the way out. I took the fuel return line off and put a hose running to a bucket to see if it the return line was clogged, it didn't make a difference. I get 17 pound of vaccum on my boost gauge in park. I haven't done a blt.

I have found in some of the paperwork that came with the car that a walbro 255 is in it, but I haven't confirmed it. I do not have a wideband yet. I have a scanmaster3 and somehow can get some kind of o2 reading from it, but I don't know what it means. I also don't know if the maft is set up right, but it passed emissions last year with the same set up. I car sounds fine when it is
running and doesn't idel bad.

Thanks for any ideas on helping me figure out what can cause this or what is wrong.

 

[GSXUAL]

Either your FPR is not adjusted correctly or it's bad. No matter the pressure coming out of the pump the FPR should regulate it. You eliminated a clogged return line as a potential fault, wich would have been my first guess.

 

[chenk18]

How can I check to see if it is bad?

 

[project_skyline]

Its obviously bad if its being over run at idle to 60 psi.

Just replace it and be done with it.

 

[steve]

First make sure you gauge isn't toast at this point. The liquid filled ones are nice because of the dampening but when the liquid heats up it changes the readings.

 

[chenk18]

I figured I would give an update since I finally got the chance to fix this. The gauge was trashed.
Thanks for the help