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





COMPRESSION CHECK

Compression should not be less than 689 kPa (100 psi) and not vary more than 25 percent from cylinder to cylinder.







Compression Pressure 1172-1551 kPa (170-225 psi)