Compression test 4.0 xkr 2001
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#2
Yes, very low. More than low the obvious problem is the big difference between the majority of cylinders and especially #8.
By warmed up I assume that it runs. Did you have the throttle plate propped open for the test? Any other signs of a blown head gasket? Water in oil? White or blue smoke out the exhaust?
By warmed up I assume that it runs. Did you have the throttle plate propped open for the test? Any other signs of a blown head gasket? Water in oil? White or blue smoke out the exhaust?
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While 8 is not great i would not be that worried, squirt a little oil in cylinders and retest. That can be a little carbon deposits on valves and or ring lands. If the compression get so off that it affects the acceleration speed the ecm is looking for at idle or above that is one of the things it will throw a misfire for code for that cylinder
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