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 spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Compression Check

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

Compression Pressure Limit Chart - 3.0L (2V) And 3.0L (4V) Engines:






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