Engine Overview and Common Failures
The weight of the VAZ 2111 engine according to the catalog is 127 kg. The engine number for the VAZ 2111 is located at the junction of the block and the cylinder head. Overheating, this power unit is extremely prone to overheating due to the low quality of the components in the cooling system. The thermostat fails, the fan malfunctions, and there is leakage in the circuit. Leaks and condensation constantly occur here. However, an interesting feature is that they do not affect the oil level. Fluctuating RPMs, the cause of unstable idle speed usually lies in one of the sensors, first check the DMRV, RHX or DPДЗ. Misfiring, if your engine misfires and it's not due to a faulty ignition module, then most likely one or several valves are burned out. Knocking noise, the noise under the hood is often caused by improperly adjusted valves. However, if it's not them, be prepared for serious repairs. Loud knocking can be caused by pistons, connecting rod or main bearings.