Difficulty starting the engine, sometimes after stopping the vehicle.Sluggish acceleration, or no acceleration.If you think your timing belt has slipped, check out this post about diagnosing timing issues. You’ll want to watch for: This will cause the engine to run poorly or not at all. Timing belts can also slip, but not fail entirely. The engine will stop running when this happens. This it can bend valves and/or cause damage to the tops of the pistons. In most engines, the valves will collide with the pistons. When a timing belt fails, the camshaft and valves suddenly become out of sync with the pistons. As the crankshaft turns, the timing belt also turns any camshafts which keep your valves opening and closing at the proper time. To put it simply, a timing belt works by keeping all the significant components of your engine in time. Read on to learn more about properly maintaining and caring for your timing belt. In many cases, a broken timing belt can mean your only course of repair is an entirely new engine. When a timing belt fails, it can be one of the worst failures your engine can experience. Modern technology allows many timing belts to last up to 100,000 miles of reliable driving. In many cars, timing belts are rubber belts with teeth designed to help your engine keep the valves in time with the pistons. If the procedure is not done properly, your engine could fail to run, run poorly, or suffer severe internal damage.When it comes to your engine, there are very few maintenance parts more important than your timing belt. The procedure is similar if your engine has a timing chain rather than a belt. If your engine has a water pump that is driven by the timing belt, that too will be recommended for replacement. It is common to replace not only the timing belt, but also the tensioners and even the pulleys on which the belt rides. This abbreviated list of steps does not account for differences between engines, whether your has single or dual camshafts, the style of tensioners used, and other variables. Reinstall all components and add fluids as necessary.Install the timing belt tensioner pulleys and set belt tension.Install the new belt, taking care to align to the timing marks.Dislodge the crankshaft pulley and timing belt.Remove the timing belt tensioner pulley (s).Synchronize the timing marks on the camshaft and crankshaft pulleys and align to top dead center.Unbolt and remove the timing cover from the front of the engine.Remove the valve cover(s) (on some models).Remove any engine accessories (AC compressor, alternator, power steering pump, etc.) that are in the way of the timing belt cover.Detach the drive pulley on the crankshaft.With those items out of the way, a typical timing belt replacement (the procedure differs from one vehicle make and model to the next) involves the following general steps: The radiator might also need to be removed, depending on the orientation of your engine. This usually requires safely lifting and supporting the vehicle off of the ground, removing shields, guards, covers, ducts and the serpentine drive belt. To replace the timing belt on your vehicle, a technician needs to gain access to the front of the engine. Timing belt replacement is quite an involved procedure that requires a good deal of tools and training.
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