In this configuration, the valves extend into the cylinder a little more than in a non-interference engine. Smaller engines may be the interference type for this reason. Interference engines gain a bit more compression and provide slightly more power. Engines are either interference or non-interference. The overall impact of a broken timing belt does depend on the type of engine installed in your vehicle. This is what occurs in a non-interference engine. There is no longer a connection between the camshaft and crankshaft. In the best-case scenario, when a timing belt breaks, your engine will simply stop running. If the pump is near the end of its expected life cycle, you will save on the cost of the second service with a high labor cost. You should consider having the water pump replaced at the same time. This rule also applies when you are replacing a timing belt. The majority of the cost of belt or water pump replacement is the labor. The belt will have stretched and getting the timing set exactly right is difficult. Reinstalling a used belt is not a good idea. In most vehicles, the belt must be removed if the water pump must be replaced. You can also answer the question of when to replace a timing belt if you are having other work done that requires the removal of the timing belt cover and belt. Belts can create a mild chatter sound but nothing in comparison to the sounds of a timing chain. Now that vehicle manufacturers are using belts you are less likely to hear when it becomes loose or cracks. When the vehicles had timing chains they would become very noisy as they loosened and began to chatter. Timing belt noise is no longer one of the most noticeable indicators of potential belt failure. Faulty timing belt symptoms include a loss of power, loss of fuel economy, misfiring and engine vibration. To be safe you should check what the vehicle’s manufacturer recommends and stay within that mileage. As technology has improved, many manufacturers recommend intervals up to 100,000 miles. Many car owners may wonder how often to replace a timing belt. Timing Belt Replacement – Find a Meineke Shop in Your City When Should I Change My Timing Belt? If the valves are not fully closed during compression, the majority of the engine’s power will be lost. If the timing cycle is off, fuel may not enter the cylinder or could escape through an open exhaust valve. The valves must open at the correct time to allow fuel to enter the chamber and then close to allow for compression. The camshaft controls the opening and closing of the valves for intake and exhaust. Depending on the vehicle make, a timing belt will also run the water pump, oil pump and injection pump. The crankshaft moves pistons up for compression and exhaust cycles, while the pistons move down for power and intake cycles. The timing belt keeps the camshaft and crankshaft turning at the correct rate. Timing chains are making a comeback due to durability so be sure to check your vehicle’s manufacturer guide to determine if you have a belt or chain. Keep in mind that not all cars have a timing belt. Learning about what belts do and when they should be replaced will help you in keeping your vehicle running while avoiding costly breakdowns. There are many questions that are frequently asked about timing belts. Timing belts began to replace chains in the late 70’s and early 80’s as auto manufacturers were researching ways to produce lighter and less expensive vehicles.
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