Diagnosing cylinder misfire

We did a complete compression test and all the cylinders tested within 11 pounds of each other with the lowest being 110 and the highest 121. Cylinder 5 is 111 cylinder 7 is 118 pounds. No noticeable coolant loose.

Garrett Ellison said

Compression test. Sounds like a head gasket problem between 5 & 7. Is it using any coolant? Report back with your findings.

Click to expand...