Engine Overview and Common Failures
The weight of the VAZ 21128 engine according to the catalog is 117 kg.
This oil consumption problem primarily concerns the power unit modification of the 2003 model. The oil consumption reaches several liters per thousand kilometers and increases with mileage.
Timing belt failure. Increased loads have greatly affected the lifespan of the standard timing belt system, sometimes less than 50,000 km. It's good that there is no bending due to valve breakage in the piston cavities.
Overheating. Various breakdowns of the cooling system: thermostat, water pump or fan, as well as coolant leaks, often lead to engine overheating.
Misfiring. Failed ignition coils, fouled spark plugs, and fuel injectors clogged with dirt are the main causes of misfiring and unstable operation of this engine.
Fluctuating RPM. As a rule, the engine speed at idle fluctuates due to some faulty sensor. The most problematic among them are: IACV, MAF, TPS, and throttle valve.