scottyMIz Posted August 11, 2001 Share Posted August 11, 2001 The problem is the fuel pump i think.I checked the feul pressure under boost and it goes up at first then drops down from 55 psi to 40 psi.My question is get another better pump?Or bigger injectors?Where you running stock injectors?I can't afford the big injectors you have right now but what ones do you recommend that i can get like off of another car?If you only like the ones you got it will take a little bit before i can get those.Runs better with the AFM adjusted back where i had it just a little rich but still starving for fuel. Quote Link to comment Share on other sites More sharing options...
TimZ Posted August 11, 2001 Share Posted August 11, 2001 My intake manifold has been modified to accept o-ring style injectors (see the recent post in the Fuel Delivery section), so my injectors will not help you. Unfortunately (for you, anyway ), I never used the stock injectors with my setup. I believe that James (240ZTurbo) had found some big injectors that at least had the same mounting arrangement at the manifold end of the injectors. I think they were from an RX7 or something. You might find something on that if you do a search. Quote Link to comment Share on other sites More sharing options...
scottyMIz Posted August 11, 2001 Author Share Posted August 11, 2001 Thanks again tim i'll check to see what i can find it's off to the track today if it still runs hot i'm going to back down the boost til i can find a better pump or bigger injectors. Quote Link to comment Share on other sites More sharing options...
240Z Turbo Posted August 19, 2001 Share Posted August 19, 2001 Scottie, I had a similar problem with fuel pressure hitting peak and then dropping off. It turned out to be my fuel filter and you can easily check this. Bypass the filter and see if the problem persists. Also, make sure your pump is seeing a constant 13+V under boost and somehow now dropping off. I would check the filter 1st before getting a new pump. The Pierburg I bought from Bell was about $200 and is rated at 680hp @ 70psi. Quote Link to comment Share on other sites More sharing options...
scottyMIz Posted August 19, 2001 Author Share Posted August 19, 2001 Thanks i will tomorrow i have some things to do to her tomorrow.I'll post the outcome. Quote Link to comment Share on other sites More sharing options...
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