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  1. 01-29-2023, 03:53 PM #1
    kwikt
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    It all started with a dead battery

    A few weeks ago my battery was stone dead even with battery tender on it. So i jumped started it to move it and it ran fine. I then purchased a new battery and started right up but misfiring. Drove it a few miles and wouldn't clear up. Seemed to be running on 5 cylinders but not. So i began searching and trial error with spare parts. Idle is poor and sluggish with heavy gas fumes and really down on power.

    72 911E
    Compression 160-170
    Leak down 2-5%
    Fuel pump flow 1000CC+ in 30 seconds
    valve timing spot on
    valve lash GOOD
    Timing and advance... Good with both Distributors
    MFI pump timing good
    Disassembled and checked fuel console
    Checked fuel pressure 13psi

    Replaced ignition coil
    Replaced cap/rotor
    Replaced with rebuilt CDI
    Replaced plugs/wires
    swapped MFI pump
    swapped distributor/points
    Swapped injectors
    Even swapped voltage regulator as last resort
    Still runs like crap no matter what is swapped. 0 improvement as when started.
    Last edited by kwikt; 01-29-2023 at 04:26 PM.
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