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15F #2&3 plugs not firing. Coils & plugs tested good on Left coil side and plug only.

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  • 15F #2&3 plugs not firing. Coils & plugs tested good on Left coil side and plug only.

    Very strange. The wires labeled 2&3 for the left coil are not working. Both coils, all wires and plugs work when connected the #1&4 connector.
    Sensors ohms tested .51 (Crank) and .42 (Cam)
    Cylinders getting fuel.
    Appears there is an issue with the 2&3 wires that go back to the ECU.
    Engine was running great prior to removing it for some detail and rear cover replacement work.
    Any Ideas ?

  • #2
    Originally posted by Chip Degan View Post
    Very strange. The wires labeled 2&3 for the left coil are not working. Both coils, all wires and plugs work when connected the #1&4 connector.
    Sensors ohms tested .51 (Crank) and .42 (Cam)
    Cylinders getting fuel.
    Appears there is an issue with the 2&3 wires that go back to the ECU.
    Engine was running great prior to removing it for some detail and rear cover replacement work.
    Any Ideas ?
    Probably wiring harness related. Inspect the grounds and block connectors, and ecu connections.

    Sean
    The older I get, the more I find myself fixing things that I knew I was doing correctly at the time.‚Äč

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