need help with testing adjustable bbk fpr

[jimberg]

For the record, your fuel pressure should not drop at all for several minutes, at least, after you turn the key off. If it does drop faster than that, you have a problem, and it's going to make the pump work harder than it should, which will shorten it's life span considerably.

Chris,

My Paxton and my BBK FPRs do not hold pressure like that, but the stock one that I had installed after the Paxton and before the BBK did. That tells me that there is nothing wrong with my fuel system as far as leaks go and that certain FPRs behave differently. I'll check again, but I'm pretty sure that that's how they behave. I thought maybe it was my gauge leaking at the Schraeder valve, but like I said, it held with the stock type regulator. My A/F curve was pretty much perfect when I put it on the dyno, too. As I said, I'll check it again to see if I just have a lousy memory.

Is there anyone reading this thread with a BBK or Paxton FPR that has had a different experience?

As far as vacuum goes, it took 2 minutes for my vacuum to drop from 20 down to 6 inchs-Hg. My pump didn't leak at all when I just put my finger on the end of the hose, so I know that pressure leaked from the regulator.