just wondering if anyone else has experienced this problem.

already replaced the o-ring on fuel pressure regulator, still shoot's gas out between it and the AEM fuel rail. is there a design flaw in the rail or is the regulator not sitting flush with the fuel rail?

 

Use Teflon tape

 

you cant not use teflon tape for my problem, there is no threads

 

its shooting out gas between regualtor and fuel rail, and no its not the o-ring

 

are you using a stock regulator or aftermarket one?

 

Did you even read the OP, or the thread title? He's using the stock FPR on the AEM fuel rail.

You can't use Teflon tape on a fuel system. Petroleum products eat through it.

OP, get a true straight edge, and make sure that the contact surfaces on both the FPR as well as the rail are smooth and even. If they aren't, it's time to either replace something, or whip out the Dremel.

 

i used teflon tape on a bolt to plug an unused port on my fuel rail. hasnt leaked since.

 

Then your fitting is fine without the teflon tape I've seen it literally dozens of times, on both my own car as well as cars belonging to friends. I made the mistake of using Teflon on my oil feed and return lines for my turbo - they were a goopy, eaten away mess after less than a month.

 

it leaked terribly without the tape

 

stock fuel rail ftw