Thread: engine only running on 3 cilinders
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Old Sep 21, 2006 | 09:43 PM
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Wardy257
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Joined: Aug 2006
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From: Lisbon
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An igniton fault is unlikely to cause a ZETEC to run on 3 cylinders, its 4, 2 or none.

Use an LED tester or NOID light to check for injector switching. What oil are you using, if it is not the proper 5/30 valve problems are common.
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