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po358 code: Help

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Old 11-03-2011, 05:27 PM
t1darian t1darian is offline
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po358 code: Help

Truck started jerkin etc @ 35 40 mph, check engine light came on and I pulled the code: po358 ignition coil h. So I replaced coil and plug, no change, still have bad miss. Pulled new plug again and it looked like it was real wet, thought maybe injector might be stuck open or somthing so I replaced injector. Still no change . Any ideas as to what else it might be ? Any help would be appreciated.

2000 Excursion 5.4
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Old 11-03-2011, 11:33 PM
trucktech trucktech is offline
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I had some what of same problem on my v10 and I replaced plugs and no change so I got all new cops and no change so pulled the plugs back out and one had a small crack in the ceramic and so replaced that plug and problem fixed never would I thought had problem with brand new motor craft plugs
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