erratic misfire on number 1 cylinder coilpack is good plug is good. won't fire and won't open fuel injector

65

Asked by Erick Dec 12, 2010 at 06:35 PM about the Ford Expedition

Question type: Maintenance & Repair

7 Answers

papa answered 13 years ago

Have you pulled out the injector to see if it is cloged up,when a injector goes bad all it will do is drip gas into the cylender,a bad one may be the problem.

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65

Erick answered 13 years ago

switched injector with another cylinder no change still misfire on number 1

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papa answered 13 years ago

are you sure the plug wires are in the right fireing order.,it has a coil pack right? that could also be your problem,where the plug wires plug into.

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65

Erick answered 13 years ago

no plug wires coil pack on each cylinder all are good all injectors are good. number one cylinder will not fire or open injector. ECM?

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papa answered 13 years ago

NO on ECM,that would affect all injectors,maybe a broken piston ring causeing the dead cylender.

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