Engine running-in after repair (VAZ-1111)

The repaired engine is subjected to bench tests (running-in) without load according to the following cycle: at a rotation speed of 820-900 min⁻¹ — 2 min; 1000 min⁻¹ — 3; 1500 min⁻¹ — 4; 2000 min⁻¹ — 5 min.

After installing the engine on the stand and starting it, check for any leaks of coolant or fuel between mating parts, from pipeline connections and through gaskets; is there any oil leakage from under the oil filter sealing ring and through the gaskets; oil pressure; setting the ignition timing; idle speed; tightness of the connection between the carburetor and the intake manifold; whether there are any extraneous knocks. If extraneous knocks or malfunctions are detected, stop the engine, eliminate them, and then continue testing.

If oil leaks between the engine oil pan and the cylinder block, tighten the bolts to the recommended torque. If the oil leak does not stop, check the condition of the gaskets and replace them if necessary.

If oil leaks through the gasket between the cover and the cylinder head, check the gasket and the rubber bushings on the cylinder head cover mounting studs. If necessary, replace the gasket and bushings, following the recommendations set out in Section. "Engine assembly".

Since the engine has not yet been run in after repair and the friction of the working surfaces of the new parts provides significant resistance to rotation, a certain period of running in is necessary. This applies in particular to those engines on which the pistons, connecting rod and main bearing liners have been replaced, the crankshaft journals have been reground, and the cylinders have been honed.

Therefore, during the running-in of a repaired engine, it should not be brought to maximum loads. The running-in of the engine on the car should continue with the speeds recommended for a new car.