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Home >> Pontiac >> 1998 >> Firefly (CANADA) L3-1.0L >> Repair and Diagnosis >> Specifications >> Pressure, Vacuum and Temperature Specifications >> Compression Check
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Compression Check

Engine Compression
Standard 1,400 kPa (199 psi) at 250 rpm
Minimum 1,100 kPa (156.4 psi) at 250 rpm
Maximum Cylinder Difference [1] 100 kPa (14.2 psi)
Engine Vacuum Pressure [2] 52.9-66.3 kPa (15.7-19.7 inch Hg)
Engine Oil Pressure [3] 323-421 kPa (46.9-61.1 psi)


[1] At 250 rpm.
[2] at 800 - 900 rpm.
[3] at 4,000 rpm.