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Engine Compression

ENGINE COMPRESSION SPECIFICATIONS (1)

Application Specification
Compression Pressure
1.8L Turbo (TT)
Normal 145- 189 psi (10.0-13.0 bar)
Minimum 102 psi (7.0 bar)
Maximum Variation Between Cylinders 44 psi (3.0 bar)
2.7L Turbo
Normal 131-189 psi (9.0-13.0 bar)
Minimum 102 psi (7.0 bar)
Maximum Variation Between Cylinders 44 psi (3.0 bar)
3.0L
Normal 145-203 psi (10.0-14.0 bar)
Minimum 109 psi (7.5 bar)
Maximum Variation Between Cylinders 44 psi (3.0 bar)
4.2L
Normal 145-217 psi (10.0-15.0 bar)
Minimum 109 psi (7.5 bar)
Maximum Variation Between Cylinders 44 psi (3.0 bar)
(1) When checking compression, ensure engine oil temperature is not less than 86°F (30°C). Throttle valve should be fully open during compression check.
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