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

COMPRESSION PRESSURE:
New 9-12 bar (131-174 psi)
Wear limit 7.0 bar (102 psi)
Max difference between cylinders 3 bar (44 psi)