Test Results

AllData Editors Note - Ford does not provide a cranking pressure specification, only an acceptable range.

The indicated compression pressures are considered within specification if the lowest reading cylinder is within 75 percent of the highest reading.








Compression Pressure Limit Chart

If one or more cylinders reads low, squirt approximately one tablespoon of Super Premium SAE 5W-30 Motor Oil, XO-5W30-QSP or equivalent meeting Ford specification WSS-M2C153-G on top of the pistons in the low-reading cylinders . Repeat the compression pressure check on these cylinders.