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Run a compression test on the engine. If the compression is ok in all cylinders it's probably an ignition or injector problem. If the compression is down in one or two cylinders but ok in the others, you probably have a burned valve.

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โˆ™ 2006-02-28 23:18:27
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Q: You are working on a 1990 Ford Escort LX 1.9 L the engine runs a little ruff when it is in park when you put it in drive or revise the engine starts to run really ruff and vibrates You can be going do?
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