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Results 1 to 9 of 9
  1. #1

    Default 35hp Johnson timing

    Could someone tell me how to adjust the timing on a 1980s Johnson?
    Thanks, I'd sure appreciate it.
    Pipemaster17

  2. #2
    Join Date
    Sep 2010
    Location
    ontario
    Posts
    9,792

    Default Re: 35hp Johnson timing

    The timing on your motor is " fixed " at the factory and should not need adjusting for the life of the motor.-----------If you are having issues with the motor then post them .-------Someone will be able to point you in the right direction on how to trouble shoot.

  3. #3

    Default Re: 35hp Johnson timing

    Thank you. My 35 horse Johnson is missing about 800 to 1000 rpms on top end. I just had the carb rebuilt and and it made no difference. It runs ruff on the idle also. It's fresh gas cause I've run a few tanks through it this spring.
    Pipemaster17

  4. #4
    Join Date
    Oct 2011
    Location
    maplevalley WA
    Posts
    8,032

    Default Re: 35hp Johnson timing

    Have you checked the compression and done a spark gap test? you want at least 1/2 inch gap crisp blue spark.

  5. #5

    Default Re: 35hp Johnson timing

    Thank you I'll take it off the lake Wed. and check those things.

  6. #6

    Default Re: 35hp Johnson timing

    I couldn't pull my boat out of the water 'til now to check it. It still isn't running right. I have 125# psi in each in cyl. I have at least 1/2" spark on new plugs. Carb has been rebuilt. I checked all my grounds. HELP!
    Thanks
    Pipemaster17

  7. #7
    Join Date
    Oct 2011
    Location
    maplevalley WA
    Posts
    8,032

    Default Re: 35hp Johnson timing

    Check the sync between the carb and timing advance I`m not sure on the setting someone here will know. You can try the seafoam trick to clean the carb. Run it out of fuel and get a can of seafoam and pump the carb full of seafoam and let it sit overnight. Hook the fuel tank up and start it and run it at around 2500 rpm until the smoke clears. Is the advance and carb opening all the way. Engine off put it in gear and give it full throttle the carb should be fully open to its stop and the advance to its stop.

  8. #8
    Join Date
    Oct 2011
    Location
    maplevalley WA
    Posts
    8,032

    Default Re: 35hp Johnson timing

    Is your tach working correct is the boat and motor running different than it did. If everything checks out with the motor you can try a prop with less pitch to bring the Rs up.

  9. #9
    Join Date
    Oct 2011
    Location
    maplevalley WA
    Posts
    8,032

    Default Re: 35hp Johnson timing

    Poor trim or a dirty hull will also affect performance is the prop in good condition.

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