Originally Posted by
blckgagt
I'm not so convinced its the FPR is my situation. I am running an Aeromotive adjustable FPR instead of stock. I've disassembled it and didn't notice anything funky. The diaphragm looked fine, and i don't notice any signs of fuel leaking past it or the vacuum tube.
Milzy has a lot of products for these engines. Another option, if you haven't heard of them yet, is WOT-Tech. Both offer quite a bit for us.
I planned on running a superchager, but the options were nill and most people were not willing to let part with theirs at the time. Either way, I am happy with my choice. I have wondered what a more aggressive cam option would do though, but that's in the future.
Anyways, I haven't messed with the idle just yet; however, I ran a leak-down test with the fuel rail off, then reinstalled for 10 minutes to test out other theories and came up with nothing. No leaking whatsoever from the rail, injectors, afpr or anywhere from underneath the car.
In both cases, within ~2 to 2.5 minutes the fuel pressure decreased from ~43psi to 30psi.
After 10 minutes, the fuel pressure had run down to around 22psi.
Maybe it is me, but that seems to be an awfully bad leak.
I think i may have narrowed the issue down to a bad check valve unless there are other theories...
On these cars, i believe the check valve in the gas tank, is that correct?