Mechanical Inspection: Compression
Check engine mechanical condition using 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. Fuel injectors on many models are triggered by ignition switch during cranking mode, which can create a fire hazard or contaminate engine oiling system.
COMPRESSION SPECIFICATIONS
| Application | Specification | ||
|---|---|---|---|
| Compression Pressure (Minimum) | |||
| 850 | |||
| Non-Turbo | 189-219 psi (13.2-15.3 kg/cm2 ) | ||
| Turbo | 156-185 psi (11-13 kg/cm2 ) | ||
| 940 | 128 psi (9 kg/cm2 ) | ||
| 960 | 184 psi (13 kg/cm2 ) | ||