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low compression

  • Thread starter Thread starter Anonymous
  • Start date Start date
A

Anonymous

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I have a 1982 gs 850 L with 18000 miles and I noticed the two out side cylinders not gettting hot as fast as the two inside cylinders when i first started it up .
Checked spark and it was ok.Checked the fuel and it was ok. checked the compression in the cylinders and I have 60 Lbs. on #1 ,120 Lbs on #2, 125 Lbs on#3 and 60 Lbs on #4 . The bike seems to run and great. Do you think that this bike needs valve adjustment?I put a tablespoon of oil in the two cylenders that were low and it made no difference.
 
Take the plugs outta 1 and 4. Put in a tablespoon of oil, recheck compression. If it comes up I believe a hone and ring job is in order.
 
I would think you have a maladjusted valve on those two cylinders. Don't run it until you find out, you can at least pull teh cover off and check to see if any of the clearances are too tight.
 
I agree, valve adjustment should be the first avenue of exploration.
 
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