gregjo1948
Well-Known Member
- Joined
- Nov 28, 2012
- Threads
- 79
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- 384
May be lower compreesion on one cylinder due to valve problem. Check the valve guides to see if they have moved. If the exhaust valve guide has moved towards the piston it may be holding the valve slightly open. This will also lower the height of the guide on the rocker side allowing some oil to run down it and blow out the exhaust and not producing noticable smoke. gregjo1948