Question about Harley Davidson XL 1200 C Sportster Custom Motorcycles

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I have a 85 sportster 1000, and just lost compression in the front head. Any Ideas on what to do ????????

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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?

Posted on Jun 20, 2009

  • bluesdude007 Jun 20, 2009

    Take the spark plug, watch down in the cylinder and make sure the piston is moving up and down.

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1985 harley 1000 no compression in front head


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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