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Thread: no power under load + backfires - fuel pressure? ignition? sensors/ecu?

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  1. 11-24-2020 10:57 PM #4
    geezer101
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    06-15-2014
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    6,059
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    Adelaide, South Australia
    Vehicle

    1985 Mitsubishi L200
    Engine

    G63B
    4G64 doesn't have a vacuum advance - all controlled by the ECU. You need to do some basic checks. First see if you are getting ANY codes from the ECU that indicate a fault. The ECU's themselves are notorious for failing but are not a nightmare to fix or diagnose. Cracking the ECU case open and a visual inspection usually reveals bad capacitors or worse case scenario bad tracks on the PCB. If the ECU has failed, it will operate in 'limp home' mode which means it'll run, but not be happy about it.
    Last edited by geezer101; 11-25-2020 at 01:20 PM. Reason: one missing word changes everything...
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