Volvo Workshop Service and Repair Manuals > C70 L5-2.4L Turbo VIN 63 B5244T7 (2003) > Engine, Cooling and Exhaust | Engine | Tune-up and Engine Performance Checks | Compression Check | System Information | System Diagnosis | Replacing Spark Plugs

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The engine compression must always be checked at wide open throttle (WOT) and the engine at operating temperature .

Preparations

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