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Home >> Chevrolet >> 1991 >> Forward Control 7.4 N >> Repair and Diagnosis >> External Pages >> Different car >> Section 13 (Engine Controls - Specifications - 3.0L) >> Mechanical Checks >> Engine Compression
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Engine Compression

WARNING: This page is about a different car, the 1995 Plymouth Voyager, 1995 Plymouth Grand Voyager, 1995 Dodge Grand Caravan, and 1995 Dodge Caravan. However, it is still accessible from the selected car via links, so may be relevant.

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

COMPRESSION SPECIFICATIONS

Application Specification
Compression Ratio 8.85:1
Minimum Compression Pressure 178 psi (1227 kPa) at 250 RPM
Maximum Variation Between Cylinders 14 psi (97 kPa) Or 25 %
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