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)

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Compression Check: Specifications



Compression Pressure

Standard 1,390 kPa (13.9 bar, 14.2 kg/cm2, 202 psi)/250 rpm

Minimum 1,140 kPa (11.4 bar, 11.6 kg/cm2, 165 psi)/250 rpm

Differential limit between cylinders 100 kPa (1 bar, 1 kg/cm2, 15 psi)/250 rpm