Can you turn the engine 2 to 2-1/2 full revolutions, in its normal direction with the key off?
Using a ratchet or a wrench on the harmonic balancer bolt? (Picture of my 1977 Jeep CJ-5 6 cylinder below).
Other than a mechanical issue or failure, coolant in a cylinder (head gasket) cannot be compressed and will show your symptoms.
Removing the plugs and turning it might verify this possibility.
Any recent abnormal issues happen prior to this?
The Medic
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Wednesday, November 13th, 2019 AT 6:54 PM
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