Question about 2002 Volkswagen Jetta TDI

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Timing belt is missing teeth

Car has a no start condition. it cranks but does not start. i took the timing cover off and the belt it missing teeth. i am gonna change the water pump as well as the belt. however what could cause the teeth on the belt to do that?

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The belt has stretched causing the belt to jump timing. When you have a belt to jump a gear or pulley it causes more force on the teeth, breaking them off. That's a lot of torque when an engine turns over and the belt is stretched. It doesn't take much for them to break off, you're lucky the belt didn't break apart, it could have been a bigger mess with valves and head problems. Some belts should be changed every 100,000 miles, some say less. Good Luck.

Posted on Jun 05, 2010

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