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Yes, the 2.0 4cyl engine is a interference motor. This means that if the motor is not timed properly, or the timing belt breaks, the pistons will hit the valves in the cylinder head. In most cases the valves can be replaced and the head can be saved. However in some extreme cases, the damage can be severe enough to require replacement of the entire engine. This is why regular maintenance and replacement of the timing belt and water pump is very important.
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