Cambelts can be hard to reach, so it’s always best to have a trained mechanic do the work. Your cambelt is designed to be replaced, as it can’t work forever, which is why your manufacturer will have a recommended changing schedule. The cambelt of some cars also powers the water pump, so if the water pump is faulty, this can affect the cambelt. If this happens, the cambelt can start to jump or become detached altogether. If this belt starts to shred, fibres from it can become trapped under the cambelt, as they both run from the crankshaft. Why your cambelt might failĪ common reason for a cambelt failing or snapping is the deterioration of the auxiliary belt. If the belt is broken, the camshaft can’t rotate and so your car simply will not start. If your car won’t start and it’s not a battery or other easily identifiable issue, it could be that your cambelt is snapped. Turn off the engine and head to AutoAdvisor to find a trustworthy local mechanic. If you notice a rubbing, rasping sound from the engine, specifically the belt cover area, then you may well need to replace your cambelt. ![]() You should always check out odd noises from your engine, of course. Here’s the symptoms of a failing cambelt you should watch out for. While you might be relying on your mileage or calendar to let you know when to replace your cambelt, there’s always the chance that it might need swapping out earlier than recommended. Timing chains usually last longer than belts as they’re made of metal, although wet belts tend to last longer than dry belts, which can dry and fracture over time.Ĭan you tell if your cambelt needs to be replaced? Some cars now use so-called wet-belts made from composites, which run inside the engine and are lubricated by oil. Timing chains are also located inside the engine, where they’re lubricated by engine oil, as opposed to cambelts, which sit outside the engine. What’s a timing chain?Ī timing chain performs the same role as a cambelt or timing belt, but it’s made from metal instead of Kevlar or similar. The valves and pistons must act in synch, as if the timing is even slightly off, the valves and pistons could incur damage, which can be very expensive. The camshaft controls the valves, which let fuel and air in and out, while the camshaft moves the pistons up and down in synch with the valves. The cambelt keeps the crankshaft and camshaft rotating in synch in order to maintain this sequence. ![]() The cambelt controls the timings and sequences of the opening and closing of the valves and cylinders. The primary role of your cambelt or timing belt is to control the timings of the engine’s internal combustion components. ![]() What does the cambelt (or timing belt) do?
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