It is best to check the condition of the timing belt as often as possible - approximately once every 15-20 thousand kilometers. It should be replaced at 50-60 thousand. It’s better not to delay and install a new kit in time.
This is especially true for VAZ-2109 cars with 1.3 liter engines. They are equipped with pistons that do not have scraping for valves.
If the timing belt breaks, the crankshaft continues to rotate. The camshaft stops, and all valves occupy the lower position (open).
The pistons hit the valves, and the force is enough to cause the valves to become deformed. Therefore, a broken timing belt can cause very sad consequences.
Replacing the timing belt on the 8th bug
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