Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Engine Compression: Q45
Check engine compression at normal operating temperature at specified cranking speed. Release fuel pressure, remove left air duct and disconnect power transistor connectors. Remove left harness connector bracket and ornamental rocker covers. Disconnect harness connector between ignition coil and power transistor. Remove ignition coil bracket and bracket with ignition coils. Remove all spark plugs, and hold throttle wide open.
| Application | Specification | ||
|---|---|---|---|
| Compression Ratio | 10.2:1 | ||
| Normal Compression Pressure | (1) 185 psi (13 kg/cm2 ) | ||
| Minimum Compression Pressure | (1) 142 psi (10 kg/cm2 ) | ||
| Maximum Variation Between Cylinders | 14 psi (1 kg/cm2 ) | ||
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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