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Old 05-15-2014, 10:39 AM
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rover67 rover67 is offline
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Join Date: Nov 2007
Location: Boulder, Co
Posts: 6,776

but if the oil doesn't do anything it could be other things leaking not just valves. other things that come to mind are head gasket or hole in piston. If it were a goal to differentiate if low compression were from valves or rings I'd pressurize the cylinder as was mentioned above. dumping oil in a cylinder might only tell you if rings are worn or not depending on what else is leaking.
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