gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Compression Check|Specifications|Page 2097 > < Engine - Miss, Hesitation, or Roughness|Page 2093
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Compression Check: Specifications

965 kPa (140 psi) @ 160 rpm.  
Perform compression test with engine at normal operating temperature, spark plugs removed and throttle wide open.

Compression Check|Specifications|Page 2097 > < Engine - Miss, Hesitation, or Roughness|Page 2093