A timing belt, timing chain or cambelt is a part of an internal combustion engine that synchronizes the rotation of the crankshaft and the camshaft(s) so that the engine’s valves open and close at the proper times during each cylinder’s intake and exhaust strokes.
 
Symptoms of a Faulty Timing Belt
1) Rough Idling of the Engine. There are teeth on the timing belts which grip gears as they’re rotating various engine parts and components.
2) Misfire of the Engine.
3) Smoke from the Engine.
4) Oil Pressure Decline.
5) Broken Pistons or Valves.
 
What happens if the timing belt breaks while driving?
If the timing belt snaps, they run into each other, causing bent valves (most common), cylinder head or camshaft damage, and possibly piston and cylinder wall damage. While it is possible that no damage could occur from a snapped belt on an interference engine, such a case is unlikely.
 
Many car owners may wonder how often to replace a timing belt. The old rule was every 100 000 kilometers. As technology has improved, many manufacturers recommend intervals up to 160 000. To be safe you should check what the vehicle’s manufacturer recommends and stay within that mileage.
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