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Thread: ATC200 1984 Refuses to Start, Low Compression

  1. #46
    Join Date
    Jul 2018
    Location
    PA
    --
    29
    After getting some Hondabond for the valve gasket and even ordering a new head with valves off ebay supposedly off a running ATC, im still getting similar compression maybe 40-50 now but still 30. Im stumped the timing chain is definitely in place the valve clearance is minimal as it should be. All gasket material is off WHAT ELSE COULD POSSIBLY BE WRONG ...

  2. #47
    Join Date
    Dec 2011
    Location
    central oregon
    --
    78
    Damn dude...you sure your testing gauge is good LOL
    Twin 1982 ATC200's
    1985 350X
    1985 200X
    and a bunch of 2 wheelers

  3. #48
    Join Date
    Jul 2018
    Location
    PA
    --
    29
    its like a Innova 20$ off amazon seems fine. Has a button to release the air and get a reading. Lots of air coming through the spark plug hole maybe more than before. I dont see any cracks in the motor like i really have no idea whats left to check. The manual says faulty decompressor lever how can i troubleshoot that cause it seems fine but i dont know the cable thats supposed togo the starter is missing but i test it with the lever pulled and not .

    I feel stupid at this point lol
    Last edited by dwheeler23; 03-18-2019 at 08:45 PM.

  4. #49
    Join Date
    Dec 2011
    Location
    central oregon
    --
    78
    You tried that gauge on any other motors?
    Twin 1982 ATC200's
    1985 350X
    1985 200X
    and a bunch of 2 wheelers

  5. #50
    Join Date
    May 2010
    Location
    TTown, Alabama, United States
    --
    845
    How does pulling the recoil feel with a spark plug in it? If it gives much resistance at all it has to be higher than 30, something bad bad has to be wrong for it to be that low, that motor would basically free wheel.
    Suicide Hill Survivor

    The rides:
    1981 ATC110
    1982 ATC185
    1983 ATC185s
    1984 ATC200es
    1985 ATC200x

    When the going gets tough, the tough get sideways

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