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: Specifications

COMPRESSION PRESSURE (at 250 - 400 RPM):
Standard 1275 kPa (185 psi)
Minimum 959 kPa (139 psi)

COMPRESSION PRESSURE DIFFERENCE OF ALL CYLINDER:
Maximum 98 kPa (14 psi)

VACUUM:
Manifold 60 kPa (18 inches Hg)