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Compression Test: 20 Psi below cylinder #3

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Old Apr 20, 2013 | 04:40 AM
  #1  
Team_Coast978's Avatar
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Default Compression Test: 20 Psi below cylinder #3

Did rings on cylinder #2, swapped heads and now I have 20psi lower on cylinder #3. My compression was fine before on that cylinder ....

- All other cylinders between 165-178 .. #3 is about 155
- Do I need a valve adjustment maybe ? Or is it build up on valves ? (Never changed valves, just cleaned them up a bit)
- Car sat a while, this is a long shot, but could it be a sticky ring ?
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Old Apr 22, 2013 | 09:48 AM
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Rtype16's Avatar
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Default Re: Compression Test: 20 Psi below cylinder #3

Did you do a valve adjustment when you put on the new head? Try that first.
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Old Jun 10, 2013 | 10:58 AM
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VegasInvasion's Avatar
I'm Huge In Japan
 
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Default Re: Compression Test: 20 Psi below cylinder #3

or you may have a head gasket leak. pretty common. copper spray it.
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