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Engine Compression

Check engine compression with engine at normal operating temperature, all spark plugs removed and throttle wide open.

ENGINE COMPRESSION SPECIFICATIONS

Application Specification
Normal Compression Pressure (1)
Minimum Compression Pressure (1)
(1) Lowest compression reading should not be less than 70 percent of highest compression reading. No cylinder compression reading should be less than 100 psi (690 kPa) at 4 compression strokes.
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