The engine gets very hot
1. Insufficient coolant level in the cooling system. Inspection to determine the location of the leak, eliminate the leak and bring the fluid level to normal (see «Checking the technical condition of the cooling system»).
2. The radiator of the engine cooling system is clogged. Blow out the radiator with compressed air or a jet of water from the side of the engine compartment.
3. Faulty valves in the cap of the expansion tank of the cooling system (see «Cooling system»). Replace defective cover.
4. Faulty thermostat. Check the technical condition of the cooling system (see «Checking the technical condition of the cooling system»). Remove and check thermostat, replace if defective (see «Thermostat - replacement»).
5. Faulty electric fan of the engine cooling system. Check the technical condition of the cooling system. Check electric fan, replace if defective (see «Electric fan of the cooling system - removal, inspection and replacement»).
6. The pump of system of cooling is faulty. Remove and replace coolant pump (see «Coolant pump - replacement»).
Glow ignition
Comment. Pre-ignition is the premature self-ignition of the working mixture from a hot substance (for example, soot formed in the combustion chamber) or from overheated (over 700-800°C) parts - spark plugs, exhaust valves, etc.
1. High idle engine speed. Run diagnostics on the engine management system (see «Checking the technical condition of the engine management system»). Update the ECU software if necessary («reflash»). Check and, if necessary, replace the throttle assembly (see «Throttle assembly - removal, gasket replacement and installation»).
2. Engine overheating. Check the coolant temperature gauge on the instrument panel and if the engine is indeed overheating, correct the cause of the overheating (see «Cooling system»).
3. The use of spark plugs with an inappropriate glow rating. Replace spark plugs (see «Spark plugs - replacement»).
4. Carbon deposits on the valves and in the combustion chambers of the engine (frequent short trips). Self-cleaning requires a long motorway trip at a speed of at least 90 km/h. As a preventive measure for the formation of soot, it is advisable to operate the car more often on free country roads.