Thread: Low Fuel Pressure on first start up. HELP!!

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  1. #1 Re: Low Fuel Pressure on first start up. HELP!! 
    TheOtherNick
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    Default 01-30-2010
    Quote Originally Posted by bbptech View Post
    I took the vacuum line off the regulator while started and no chainge. stayed at 18 psi
    Looks like the regulator is not working. Fuel pressure should go up with no vacuum at the regulator.
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  2. #2 Re: Low Fuel Pressure on first start up. HELP!! 
    bbptech
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    Default 01-30-2010
    well i got the problem solved. Swapped in a canister that had a stock pump in it and fuel pressure is at a stable 45 psi.

    i either have hooked the zzp pump up wrong or its faulty.
    ZZP 10.4mm's, ZZP S2 IC, 3.4, 3.0, Ported Gen V, ZZP Headers, ZZP CNC Heads, ZZP 78mm TB, ZZP Aluminum Valve Covers, Meziere Electric WP, ZZP Fuel Pump, ZZP Fuel Logs, 65 Mototrons, 3.29's, 2500 Stall. Tuned by GLANZERGTX and Kyle. E85 Converted, 21* Timing
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  3. #3 Re: Low Fuel Pressure on first start up. HELP!! 
    jaysgtp360
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    Default 01-31-2010
    there was some issue with the tube that runs in the cannister....one of the 3800 aftermarket guys has a fix for this...If I remember correctly you have to use 97-98 cannisters for some aftermarket fuel pumps to work properly.....I don't have all the emails anymore...many Hard drives ago.....but I saw you had aftermarket pump and when you changed out cannisters all was good...I haven't seen one of these in a while as I have been dealing with transaxles.
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