Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the logical successor to CHARM, I recommend you try it!

Link: lemon-manuals.la

Compression Check

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

Compression Test - Test Results
The indicated compression pressures are considered within specification if the lowest reading cylinder is at least 75% of the highest reading.

Compression Pressure Limit Chart (Part 1):




Compression Pressure Limit Chart (Part 2):