1979 Harley Davidson XLH 1000 Sportster Logo
Posted on Jun 20, 2009
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1985 harley 1000 no compression in front head

Hello I have a 1985 sportster 1000, I was just riding it the other day and it wanted to quit.. It lost compression in the front head, do you have any idea what I should do? Thanks

  • Gar
    Gar May 11, 2010

    How do you know it lost compression? Did you do a compression check? Are ya sure it didn't lose spark and you are mistaking it for loss of compression? Clarify your problem and I can help ya. I need more info.

  • Anonymous May 11, 2010

    did u do a compression check

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  • Posted on Aug 07, 2009
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Remove the push rod tubee on the front jug.see if the pushrods are moving up and down.see if they are loose.if loose adjust try again.
your valves may be stuck open if not stuck open pour 1 once of mystery oil in head try comp test again.[this is to check the rings}if still no comp you have a hole in your piston or blown head gasket

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Could be a head gasket, hole in the piston, a broken ring, a piece of carbon under a valve, or even a broken valve. Could also be a push rod. Any more details?
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