Engine Overview and Common Failures
The weight of the VAZ 21116 engine according to the catalog is 112 kg. Fluctuating RPMs Unstable engine idle RPMs often occur due to glitches in one of the sensors or the electronic throttle valve E-gas. Knocking in the engine Unadjusted valves are usually the source of loud noises under the hood. However, if they are in order, it could be due to main or connecting rod bearings. Friction The most common cause of friction in this engine is a malfunctioning four-wire ignition coil. Less frequently, valve burning can be the culprit. Overheating Engine overheating often occurs due to problems with the cooling system. The thermostat and fan fail, causing coolant leaks. Critical breakdowns The water pump cannot be considered a weak link in the engine, as its lifespan is quite ordinary. However, when it fails, the timing belt almost always breaks, and the valves bend in 100% of cases.