Mechanical Inspection: Compression
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 1994 Plymouth Sundance, 1994 Plymouth Acclaim, 1994 Eagle Vision, 1994 Dodge Spirit, and 1994 Dodge Shadow. However, it is still accessible from the selected car via links, so may be relevant.
Check engine mechanical condition with a compression gauge, vacuum gauge or engine analyzer. See engine analyzer manual for specific instructions.
WARNING:
DO NOT use ignition switch during compression tests on fuel injected vehicles. Use a remote starter to crank engine. Injectors on many models are triggered by ignition switch during cranking mode, which can create a fire hazard or contaminate the engine's oiling system.
ENGINE COMPRESSION SPECIFICATIONS(1)
| Application | psi (kg/cm2 ) | |||
|---|---|---|---|---|
| Minimum Compression Pressure | ||||
| 2.2L & 2.5L | 100 (7.0) | |||
| 3.0L | 178 (12.5) | |||
| 3.3L | 100 (7.0) | |||
| 3.5L | 155-170 (10.9-12.0) | |||
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