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spark woes

in General Tech Discussion 8 years ago
I have no spark on my #3 and #4 top plugs removed coil had it tested showed bad so I replaced it with a new one, still no spark on 3 and 4 top checked all connections and wires found no problems checked trigger coil B3/4 which serves top plugs 3 n 4 with ohm meter checked ok gap is good could electric module be going bad ? Have good spark on all other plugs this is a 97 912 ul need help!

  • Re: spark woes

    by » 8 years ago

    1- swap the trigger coil 4-pin connectors. if the problem goes to the other side the trigger is the culprit.
    2-swap the A module white wire with B module white wire and see if the problem goes to the 3/4 top plugs. if it does the B module has a failure in one circuit.
      
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