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    1985 Johnson 120hp poor idle/starting

    Kinda wondered about something to do with the fuel pump. But if I use the primer and the bowls will be full and that makes no difference. Have thought about pulling the heads off. Should just order some head gaskets and check.
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    1985 Johnson 120hp poor idle/starting

    Since the initial couple days it hasn’t completely die again. So can’t test it when it does. After completely going through all the electrical and fuel system it runs fine over 2000rpm. Anything under it misses and stalls. Have tried two other powerpacks same result. Would like to find out how...
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    1985 Johnson 120hp poor idle/starting

    Compression 120psi each cylinder. Vro deleted older fuel pump installed. Checked fuel pressure 3-5psi at idle. Dva tested everything. All with in cdi electronics spec. 295v stator connected 170v at coil. Dva tester needed to be red to ground black to coil. Not sure if that’s normal cdi...
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    1985 Johnson 120hp poor idle/starting

    I could try switching coils. Have three powerpacks same issue with each.
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    1985 Johnson 120hp poor idle/starting

    Yes done both those. Spark doesn’t seem to jump that far with all four cylinders. But always have good spark with the spark plugs. Champions spark plugs. When it’s idling I have unplugged every spark plug and everyone makes a bit of difference but the port side made the most.
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    1985 Johnson 120hp poor idle/starting

    Been searching this and other forums for months now. A lot of good info but still unable to resolve the issue. First time out this year started up smooth and ran excellent for about 20min then it was just like the key was turned off. Started back up ram fine for awhile then quite and wouldn’t...
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