55 Panhead
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55 Panhead Idle Problems
I have a 55pan that will not idle down after it is warmed up. I have since done a top end, new points, adjusted push rods twice, changed carbs and changed jetting. I noticed the front spark plug is darker than the back. Would worn rings maybe cause it to idle up after warm? Any ideas? Why?
Compression: Cold 90 front, 65 rear
Hot 85 front, 75 rear. More than 10% diff.
Thanks,
Russ
Compression: Cold 90 front, 65 rear
Hot 85 front, 75 rear. More than 10% diff.
Thanks,
Russ
Last edited by rbrapp1; Nov 29, 2009 at 12:30 PM. Reason: More info
Road Master
Joined: Jun 2008
Posts: 1,078
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From: NW Florida
Check the condition of the manifold o-rings. A new top end should have better compression than that on the rear. You might want to check to see if you staggered the gaps in the rings properly.
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Joined: Dec 2007
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If it is Linkert-equipped, they get worn around the throttle shaft area and will pull air.
Another thing to look at would be the distributor.
Broken spring, or the flyweights could be buggered.
Scott
Another thing to look at would be the distributor.
Broken spring, or the flyweights could be buggered.
Scott
Last edited by Hillsidecycle.com; Dec 2, 2009 at 07:28 AM.
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