Note: Check compression in case of reduced power, increased oil or fuel consumption.
1. Warm up the engine to operating temperature and turn it off.
2. Disconnect high-voltage wires or remove ignition coils.
4. With a candle wrench (size 16 mm) remove 4 spark plugs.
5. Install a compression tester in the spark plug hole.
6. Fully open the throttle.
7. Scrolling a cranked shaft a starter, measure a compression.
Rated value: 1618 kPa (1.4 l); 1422 kPa (1.6 l).
Minimum value: 1471 kPa (1.4 l); 1276 kPa (1.6 l).
Limit discrepancy between cylinders: 98 kPa.
Note: Use a fully charged battery to keep the shaft spinning at 250 rpm or more.
8. Repeat the above steps for the remaining cylinders.
Note: This measurement must be made as soon as possible.
9. If the compression in one or more cylinders is below the minimum, pour a small amount of engine oil into the cylinder through the spark plug hole and recheck the compression in the cylinders. If the compression pressure has increased, this means that the piston rings and / or the cylinder mirror are damaged. If the pressure does not increase, then the cylinder head gasket is damaged or the valves do not close completely.
7. Install spark plugs.
8. Connect connectors or high voltage wires.