Mechanical Inspection: Compression
Check engine mechanical condition with a compression gauge, vacuum gauge, or an 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. Fuel 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.
Check compression pressure with engine at normal operating temperature, all spark plugs removed, throttle valves wide open and at specified cranking speed. Crank engine at least 6 revolutions to determine engine compression. See ENGINE COMPRESSION table.
ENGINE COMPRESSION
| Model | Standard psi (kg/cm2 ) | Minimum psi (kg/cm2 ) | Minimum RPM | ||
|---|---|---|---|---|---|
| Prelude (1) | 178 (12.5) | 135 (9.5) | 250 | ||
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