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RobertGayle · 08-10-2012, 10:40 PM

In general, the cylinder heads are pretty well designed on the M96 engine. However, on some 3.2, 3.4 and 3.6 engines, small cracks can sometimes develop around the seats of exhaust valves and extend to the spark plug hole.....

08-10-2012, 10:40 PM	#18
RobertGayle Registered User Join Date: Aug 2012 Location: united states Posts: 1	How Common Are 987 Engine Failures In general, the cylinder heads are pretty well designed on the M96 engine. However, on some 3.2, 3.4 and 3.6 engines, small cracks can sometimes develop around the seats of exhaust valves and extend to the spark plug hole.....