Fuel supply O ring help

[Turbo6Smackdown]

For GM # 22514722 fuel supply o ring, I was wondering where this went exactly. I did the smaller one that screws into the bottom of the FPR, and that o ring was destroyed. So by that theory, the other one must be destroyed too. I want to replace that one but don't know where it is lol. Can anyone direct me please?

 

[Turbo6Smackdown]

Noone? Need some help lol. It's odd... Before (like a year ago) my fuel pressure gauge would hold 40psi for about a day. Then a few months ago she started leakin down in about 10 minutes Tried different regulators, no dice. Noticed the o ring was destroyed. Replaced it and no dice. Then yesterday I noticed I have about 20 psi still in the gauge, from a full day ago. Wow. How does this stuff go back and forth like this?

 

[NY_GN]

Leaking injectors? In tank return hose on fuel pump not rated for in tank use and it is deteriorating?

Just a thought.

 

[Turbo6Smackdown]

Injectors pass the leak test, and the in tank pump is a new set up from full throttle. I'm assuming it's all good to go?

 

[5280GN]

There's an o-ring on the feed line to the rail. I just replaced mine because it was destroyed.

 

[Turbo6Smackdown]

Where's that at? And so the smaller of the two o rings I just replaced, that return then I'm guessing?

 

[5280GN]

Its the line going into the passenger side of the fuel rail. The return line comes off the bottom of the fuel pressure regulator.

 

[Turbo6Smackdown]

Gotcha. Thank you. Is it easy to get to? While I'm tearin' in to this thing I may want to try that as well.

 

[5280GN]

yup real easy to get to, it's on top of the engine. Just need a 16mm wrench.

 

[Turbo6Smackdown]

Cool. Will try that as well. Thank you sir.

 

[87GN_70GS]

There are also two on the hard lines where they enter the frame as they go back toward the tank. i wouldnt replace those unless they are leaking