Cylinder Compression Pressure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Check engine mechanical condition with compression gauge, vacuum gauge, or engine analyzer. See engine analyzer manual for specific instructions. For compression specifications, see ENGINE COMPRESSION SPECIFICATIONS table.

ENGINE COMPRESSION SPECIFICATIONS

Application

Specification - psi (kPa)

Minimum Compression Pressure

⁽¹⁾

Compression Variance

⁽²⁾

⁽¹⁾	Lowest compression reading should not be less than 300 psi (2069 kPa).

⁽²⁾	There should not be more than 50 psi (345 kPa) difference between a suspect cylinder and the average compression of all 8 cylinders.