Mechanical Inspection: Compression
WARNING: This page is about a different car, the 1995 Mazda MX-5 Miata. 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 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.
COMPRESSION SPECIFICATIONS
| Application | Minimum psi (kg/cm2 ) @ RPM | Standard psi (kg/cm2 ) @ RPM | ||
|---|---|---|---|---|
| Miata (1) | 128 (9.0) @ 300 | 182 (12.8) @ 300 | ||
|
||||