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new motor installed but having problems

Discussion in 'General Tech and Maintenance' started by the_crazy_russian, Oct 19, 2005.

  1. the_crazy_russian

    the_crazy_russian Junior Member

    Likes Received:
    Jul 11, 2004
    in an igloo drinkin Vodka watchin hockey!
    I finished installing a built a6 into my 99cx but am having some problems. the car idled decent but when you would try and drive it would surge and bogs around 1500-2000 then throw a code 43 (Fuel supply system) I've heard this code can be caused by a bunch of different things. I installed a new fuel filter with the swap along with other genreal matinence items.I was running a integra fuel reg since that fits better on the str fuel rail. but I've now switched to my adjustable regulator so I can see what my fuel pressure is.my fuel pressure stays at 42lbs. it's using stock injectors. I've gone over my electrical connections and everything looks good. I've run both, stock o2 and my wideband.now when the car starts it's around 14 a/f stays there for a sec, then slowly climes and when it reches around 17a/f the car dies.somthing is causing it to lean out like crazy but I'm not sure what. the only code I get is 43. I definatly don't wann run the car when it's going lean :cry2:

    in case they can help with diagnosing the problem here,s a quick rundown of mods off the top of my head,
    99cx hatch
    obd2-obd1 conversion
    running stock p28
    a6 block w/forged internals
    zex 59300 with springs
    head ported and polished
    stock injectors
    adjustable fuel reg
    venom intake
    bored tb
    from what I can tell there are no vac leaks.

    any help would be appriciated.

    EDIT: I think my fuel pressure is way to high I will try adjusting in the morning
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