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Home >> Triumph >> 1979 >> Spitfire >> Repair and Diagnosis >> Engine Performance >> Tune-Up >> Tune-Up Procedures - 4-Cylinder >> Engine Compression
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Engine Compression

Check compression with engine at normal operating temperature, spark plugs removed and throttle wide open. Crank engine through at least 4 compression strokes before taking reading. All cylinders should be within 10 psi (.70 kg/cm2 ) of each other.

ENGINE COMPRESSION SPECIFICATIONS

Application Minimum psi (kg/cm2 )
All Models 145(10.2)