Note: In case of lack of power, engine, excessive oil consumption or increased fuel consumption, check the pressure at the end of the compression stroke.
1. Warm up the engine, then stop it.
2. Disconnect a wire from the negative plug of the storage battery.
3. Disconnect the glow plug connector.
4. Remove the glow plugs.
5. Disconnect the fuel cutoff valve connector.
6. Connect a wire to the negative plug of the storage battery.
7. Measure the pressure in the engine cylinders.
A) Install a compression gauge.
b) Turning the crankshaft with a starter, measure the pressure at the end of the compression stroke.
Note: The battery must be fully charged in order for the engine speed to be at least 250 rpm.
V) Repeat measurements for each cylinder.
Attention: these measurements must be carried out as soon as possible.
- Pressure at the end of the compression stroke - at least 30 bar
- Minimum pressure - not less than 25 bar
- The difference between the individual cylinders is not more than - 5 bar
G) If one or more cylinders show low pressure, pour a small amount of engine oil into the cylinder through the glow plug hole, then retest for that cylinder.
- If the addition of oil increases end-stroke pressure, the piston rings and/or cylinder are worn or damaged.
- If the pressure remains low, the valve may be sticking or not seated properly, and the gasket may leak.
9. Remove the compression gauge.
10. Install glow plugs.
11. Connect the connector to the fuel cutoff valve connector;
12. Connect a wire to the negative plug of the storage battery.