What happens to the engine in a 03 Cavalier if the timing belt beaks?

Asked by Mar 11, 2013 at 08:09 PM about the 2003 Chevrolet Cavalier

Question type: Maintenance & Repair

3 Answers

....well according to my sources, it has a timing chain. 2.2 liter?

4 out of 4 people think this is helpful.

The 2.2L Ecotec engine in a 2003 Cavalier uses a timing chain instead of a belt. When the chain breaks most likely there will be broken intake and exhaust valves, possibly holes punctured into some pistons, the timing chain cover may get a crack in it, and the oil pan may also become cracked or a hold punctured in it as well.

2 out of 2 people think this is helpful.

Good probability of bent valves. Sometimes it just marks the pistons. It depends on what the engine speed was when it failed. That's why I have a spare Ecotec head in the garage. The early (2002-2003) 2.2L ecotecs had a poor timing chain oiling system and they were prone to failure if the engine was run at high RPM's. Updating the oiling system is recommended if the chain is replaced. Change the water pump at the same time.

4 out of 4 people think this is helpful.

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