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  1. #1
    Technical Writer for Internet & Print Media
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    Default 04 LS6 fuel pressure

    Was out testing fuel pressure today.

    Key on/engine off my fuel pressure meets the first FSM spec (55-62 psi) but just barely misses the second (at least 51 psi after 5 min)

    Engine on and at idle or at light load cruse it's about 58 psi.

    When I go to WOT at 2000 and run it to the rev limiter it starts at about 57.5 but gradually drops to about 46-46.5 psi at 6600-6800 rpm.

    Comments?

    I know GM lists a fuel filter for 2003.5-2004 but I also know you have to pull the left tank to replace it. Has anyone done that?

    mods:
    170 thermostat, Fluidyne Radiator, straight water coolant
    Green Filters w. Granatelli Low restriction intake kit and MAF
    Crane 1.8:1 rockers and dual valve springs
    Corsa X-pipe
    Denso IT-22 plugs and MSD wires.
    Custom calibration w. 6800-rpm rev limiter
    Red Line lubricants
    Last edited by Hib Halverson; 03-21-13 at 04:02 PM. Reason: edited

  2. #2
    Member froggy47's Avatar
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    Black 1996 LT4 Coupe/ 2004 Z06/Z16
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    subscribe
    2004 Z06/Z16 stock
    Black/gray 1996 LT4 Coupe (sold)


    2006, 2009, 2010, 2011, 2012, 2013 SCCA Regional Solo Champion

    Ready to buy a 2012/2013 C6Z from motivated seller, don't need to sell my c5, or ask the wife or bank. PM if you have a lead for me. Thanks!

    Link to my DIY videos http://www.youtube.com/user/1947froggy?feature=guide

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