losing fuel pressure on acceleration. lean at wot - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

derass · 04-03-2016, 11:20 PM

Try taking the vacuum hose off the FPR and revving it. I have a feeling the problem has something to do with the FRP.

Many people with these cars rewire the fuel pump, but I don't think you have to do that just yet. You shouldn't be losing fuel pressure just by revving it a little bit.

entrapm3nt · 04-03-2016, 11:23 PM

Quote:

Originally Posted by derass

Try taking the vacuum hose off the FPR and revving it. I have a feeling the problem has something to do with the FRP.

Many people with these cars also rewire the fuel pump, but you shouldn't be losing fuel pressure just by revving it a little bit.

What should it do with vac unplugged revving it? The fpr is brand new and aeromotive.

derass · 04-03-2016, 11:45 PM

Quote:

Originally Posted by entrapm3nt

What should it do with vac unplugged revving it? The fpr is brand new and aeromotive.

I'm thinking it will drop less, if at all. Maybe I'm wrong, but it's a quick check to see if the FPR is the culprit.

entrapm3nt · 04-03-2016, 11:49 PM

Quote:

Originally Posted by derass

I'm thinking it will drop less, if at all. Maybe I'm wrong, but it's a quick check to see if the FPR is the culprit.

So if it doesn't drop that would mean my fpr is bad? I highly doubt it is but I'll Def test it as soon as I can. Thanks for all info so far guys. I'll try to keep you posted in case other have similar problems.

04-03-2016, 11:20 PM	#1
derass Zilvia FREAK! Join Date: Jun 2010 Location: Toronto, ON Age: 37 Posts: 1,182 Trader Rating: (0) Feedback Score: 0 reviews	Try taking the vacuum hose off the FPR and revving it. I have a feeling the problem has something to do with the FRP. Many people with these cars rewire the fuel pump, but I don't think you have to do that just yet. You shouldn't be losing fuel pressure just by revving it a little bit.