| 1. Make sure the fully charged battery. If necessary, recharge it. |
| 2. Warm up the engine to normal operating temperature. |
| 3. Remove the center cover. |
| 4. Disconnect high-voltage wires from the cylinder head. |
| 5. Remove the spark. |
 | 6. Attach the compression gauge in the spark plug hole of the cylinder 1. |
| 7. Fully depress the accelerator pedal and turn the starter engine crankshaft. |
| 8. Write down the maximum gauge reading. |
| 9. Repeat the operation for each cylinder. |
| Pressure, kPa at 300 min -1 | FE DOHC | T8 DOHC | | Standard | 1176 | 1333 | | Minimum | 980 | 999.6 | | The maximum difference between cylinders | 196 |
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10. If the compression in one or more cylinders is low, pour a small amount into the cylinder engine oil and recheck compression.
If the compression is increased, which indicates wear of the piston or piston rings of the cylinder.
If the compression is still low, it indicates jamming or improper seating of the valve.
If the compression in adjacent cylinders remains low, this indicates a malfunction of the cylinder head gasket or deformation of the cylinder head. |
