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
Unplug distributor and ignition coil. If equipped, unplug cold start injector connector, solenoid resistor, and fuel injector connectors. Check compression pressure with engine operating at normal temperature and specified cranking speed, all spark plugs removed (on dual plugs, remove exhaust side only), and throttle wide open.
| Application | psi (kg/cm2 ) | |
|---|---|---|
| Compression Pressure | ||
| Camry (3S-FE Engine) | 178 (12.5) | |
| Celica 3S-GTE Engine | 164 (11.5) | |
| Celica 4A-FE Engine | 191 (13.5) | |
| Celica 5S-FE Engine | 178 (12.5) | |
| Corolla (4A-FE & 4A-GE Engines) | 191 (13.5) | |
| Pickup & 4Runner (22R-E Engine) | 171 (12.0) | |
| Tercel | 185 (13.0) | |
| All Others | 178 (12.5) | |
| Maximum Variation Between Cylinders | 14 (1.0) | |
| Minimum Compression Pressure | ||
| Celica (3S-GTE Engine) | 128 (9.0) | |
| All Others | 142 (10.0) | |
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.