Leaking fuel pressure regulator?

[johnathan1]

The other day, I noticed that the vac line going to my stock FPR was looking a bit dry, so I pulled it off of the FPR, and the hose is super hard, and not soft like it should be, and I replaced it not long ago...it also smells like fuel.

So I started the car with the vac line off, and revved it a few times, and saw fuel shooting out of the vac nipple :aigo:...It wasn't an alarming amount, but still enough to cause concern...I'm guessing this means the diaphragm inside is leaking? What effect would this have on the engine? I know my 7M doesn't like to idle after a hot start lately...

 

[williamb82]

low fuel pressure which means a lean condition. dont drivet he car until its replaced.

 

[jdub]

Agreed...don't drive it with a leaking FPR. Not only could you go lean, but if it leaks into the bay you can have a fire on your hands. I have a stock FPR...if you need it, PM me.

 

[TurboStreetCar]

Wouldn't it be running rich because its pouring fuel into the vac line? and also because its most likely not lowering the pressure from base at idle and sub boost conditions?

on boost i guess would be a guessing game but just driving around town i would think it would be rich.