- 750-800 min-1 - 2 min
- 1000 min-1 - 3 min
- 1500 min-1 - 4 min
- 2000 min-1 - 5 min
After installing on the stand and starting the engine, check the following:
- are there any leaks of coolant or fuel between mating parts, from pipe connections and through gaskets;
- oil pressure and whether there is oil leakage through the gaskets;
- idle speed;
- there are no extraneous knocks.
If extraneous knocks or malfunctions are found, stop the engine, eliminate them, and then continue testing.
If oil leaks through the gasket between the cover and the cylinder head or through the gaskets between the engine oil sump, cylinder block and covers, tighten the mounting bolts to the recommended torque. If the oil leak does not stop, check that the gaskets are installed correctly and replace them if necessary.
Since the engine has not yet run in after the repair and the friction of the working surfaces of new parts has a significant resistance to rotation, a certain period of running in is necessary.
This applies in particular to those engines on which pistons, connecting rod and main bearing shells have been replaced, crankshaft journals have been ground, and cylinders have been honed.
Therefore, during the break-in of a repaired engine, do not subject it to maximum loads. The engine break-in must continue on the vehicle at the speeds recommended for the vehicle's break-in period.