Preventing Timing Belt Breaks and a Major Disaster
A worn outtiming beltcan disrupt engine time, upset compression and affect engine power. For this reason, car manufacturers recommend replacing the belt at suggested intervals-usually between 50,000 and 100,000 miles (80,000 and 160,000 km). Unfortunately, mileage is not the only reason to replace a timing belt. Problems with other engine parts and assemblies may have a negative impact on a good belt. Thus, learning how to look for signs of trouble can tell you when to replace your timing belt as well. It can save your engine from major disaster.How to inspect your car's timing beltThe engine on your vehicle uses the timing belt to run thecamshaft(s)in the cylinder head. The belt mounts at the front end of the engine. Thus, to inspect the timing belt, you need to remove the front cover. Depending on your vehicle make and model, you may have to remove a few components to gain access to it. If necessary, check your vehicle service manual.Once you gain access, check the belt for signs of oil orwater leaks. Leaks on the front end of the engine-water pump or front oil seal-can damage and accelerate belt wear. Also, look along the smooth side of the belt for signs of irregular wear or cracks. They could stem from problems with the tensioner pulley or idler. The tensioner's bearing, for example, may dry or wear out and become rough, interfering with the smooth rotation of the belt.Damage can also happen on the belt's side and teeth. If there's side damage, check for problems with the alignment between the belt guide and the pulley. To check the belt's teeth properly, you might need a flash light. Look for signs of teeth premature wear. Usually, problems with the timing belt sprockets-even oil leaks-may cause teeth damage. However, if one or more teeth are missing, check for a rotating part that has become frozen like an oil or injection pump.Always check your car's owner manual or the service manual for your specific vehicle make and model to see the recommended belt replacement interval. However, if you suspect engine performance problems due to timing belt damage or wear, inspect it as soon as possible. If your timing belt breaks during engine operation, it can cause valves and pistons to collide and break. Keep this simple guide handy. It can help you save your engine from serious damage and your wallet from expensive repairs.
