A misaligned timing belt will cause a decrease in fuel efficiency due to the engine working harder than it needs to be. Loss of Fuel Mileageįuel mileage will suffer when engine timing is off. If the timing belt has shifted, it causes the valves to open and close improperly, leading to diminished performance. The timing belt is responsible for keeping the camshaft(s) in sync with the crankshaft. If the timing belt has jumped a few teeth, but hasn’t fallen or broken off yet, it can knock the engine out of time. It’ll typically be a rough rattling sound, and it is often most noticeable right when you start up your Canyon. There may be a sound of rubber beating against something. Slapping NoiseĪ good indication that a timing belt has gone bad is going to be noise. If this is the case, the damage is already done.
You might hear it slapping around (broken timing belt or chain) as the engine cranks over. If your Canyon’s timing chain or belt has fallen off completely, broken, or has jumped a few teeth, it is entirely possible that the engine won’t even start. Here are some of the most common warning signs of a bad timing belt on the GMC Canyon: 1. No matter which one your Canyon has, the symptoms are the same when they fail. Timing belts are made out of rubber and nylon, unlike a timing chain, which looks much like a bicycle chain. Knowing the symptoms of a bad timing belt or chain is vital so this doesn’t happen to your GMC Canyon. If it jumps a tooth or breaks entirely, it can lead to permanent engine damage.
A bad timing belt or timing chain can be a serious issue.
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