Was getting it ready to start today and found that my injector o-rings are too small on the fuel rails. I jumped the terminals for the fuel pump relay to get some fuel moving, and all the injectors leaked at the rail. Anybody had that problem before? If so, whats a compatible o-ring thats big enough to hold fuel pressure?

 

Ya ran into the same prob when i went from stock rails to the fast ones. I cant remember the size tho, i know they are light blue lol. Call Jon at FIC he told me what i needed.

 

I am using the light blue ones....they felt like they had a loose fit when I first put them in...

 

Just went out and checked something, the light blue were right on stock rails, sorry i just realized you are using aftermarket rails. Ok pulled the rail real quick, they are dark green, hope that helps.

 

Probably need ls2 uppers, they are slightly bigger

 

Rgr that, thanks. Might have to go troll around at the dealership to find some.

Anyone got a part number?

 

Just searched LS2 and came up with this for a kit... say's injector o ring seal kit.
GM #89017587
Ac delco 217-1624

and you hit 3000 post today!!! LOL

Maybe they have single o rings you can try at the dealer. Take your injector and rail.

 

Dang!! 3000 posts!!! Baller

 

Pretty cool what you're doing with the PCM

 

What injectors are you using?