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.
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HOMESERVICE MANUALSTOYOTA2004CELICA GT, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 26 (ENGINE CONTROLS - SERVICE & ADJUSTMENT SPECIFICATIONS)MECHANICAL CHECKSENGINE COMPRESSION
2004 Toyota Celica GT, Standard
Engine Compression
2004 Toyota Celica GT, StandardSECTION Engine Compression
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2002 Lexus SC 430, 2002 Lexus RX 300, 2002 Lexus LX 470, 2002 Lexus LS 430, and 2002 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
Check engine compression with engine at cranking speed with battery fully charged, engine at normal operating temperature, all spark plugs removed and throttle wide open.
COMPRESSION SPECIFICATIONS
| Application | Specification | |
|---|---|---|
| Normal Compression Pressure | ||
| ES300 & RX300 | 218 psi (15.3 kg/cm2 ) | |
| GS300, IS300 & LX470 | 192 psi (13.5 kg/cm2 ) | |
| GS430, LS430 & SC430 | 178 psi (12.5 kg/cm2 ) | |
| Minimum Compression Pressure | ||
| ES300 & RX300 | 145 psi (10.2 kg/cm2 ) | |
| GS300 & IS300 | 156 psi (11.0 kg/cm2 ) | |
| GS430, LS430, LX470 & SC430 | 142 psi (10.0 kg/cm2 ) | |
| Maximum Variation Between Cylinders | ||
| Except ES300 & RX300 | 14 psi (1.0 kg/cm2 ) | |
| ES300 & RX300 | 15 psi (1.1 kg/cm2 ) | |
RENDER: 1.0x
NO RELATED
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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.