What happens to the engine in a 03 Cavalier if the timing belt beaks?
....well according to my sources, it has a timing chain. 2.2 liter?
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.
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.
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