I was just poking around in the engine bay scouting my Plenum disassembly route, and when I removed the vaccum line that goes from the fuel pressure regulator to the back of the Plenum, there was fuel in it. Maybe It's just me being paranoid, but I don't recall this being a good thing in regards to the FPR diaphram. Can someone chime in on this?

 

ruptured diaphragm, should be no fuel in the line

 

That's exactly what I thought. This causes the engine to run rich, correct?

Also, when purchasing an adjustable FPR such as a BBK unit, does it include the a diaphragm and all as a bolt on turn-key mod?

 

yes, the fuel gets sucked into the TB causing a rich condition.

Yes, adjustables are all complete ready to bolt on.

 

I just looked all over the net and couldn't find any mention of whether or not the BBK 1714 kit comes with a diaphragm. However, when I looked the part up on summit it said in the notes, "Must re-use stock diaphragm and spring assembly"

 

Oh those are only hats w/ a screw to adjust it then, figured you meant a complete FPR

 

I was checking and it looks like advance auto sells the diaphragm:

http://shop.advanceautoparts.com/web...674035144____#

But, look at the one comment:

Has this guy lost his mind? I thought one you removed the allen screws the FPR "hat" comes off to expose the diaphragm?

 

When I removed the diaphragm, this is what it looked like. What would cause the rubber to rot out like this?

 

Age, heat and constant exposure to gasoline. Nothing lasts forever