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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 02-26-2008
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need help

So my truck has had a varying misfire, it wasnt bad but i could feel a small type bump while driving. Dude I got it from did tell me in advance it would need a coil as to his inability to afford one. He put new plugs and wires in shortly before I got the truck ( 2 weeks). Now I have replaced the coil and it was cool for about 1 hour, back to same old thing.

My question is, could the new plug/plugs fouled from the misfire of the old coil before I replaced it. I had to drive it for a couple days before I could change the coil..

I am kinda at a loss here. Any help would be awesome..

Thanks in advance
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Old 02-27-2008
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????????? any one
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Old 02-27-2008
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take the plugs out and make sure they are new and make sure they are gaped to the right size
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Old 02-27-2008
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did that, all is well. It was my MAF sensor. cleaned it and all is well. ( For now)
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Old 02-28-2008
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Did it throw a CEL? If so what code?

Rich
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Old 02-28-2008
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well ****, i cleaned the maf and it was good for about 30 min, now doing it again.. No CEL are coming on.... I may have to take it in the *** and pay a mechanic to figure it out...
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Old 02-28-2008
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check the oil. I've found that mine will pop and miss slightly when i am low in oil. Altough i burn ALOT, but i would check
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Old 02-29-2008
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Hum... sometimes a loose plug will do what you describe. Might want to check to see if they are all tight. (12ft lbs)

Rich
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Old 03-01-2008
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ok so i pulled the plugs, not only were they ****, they were not gapped, so i put in new ones with the proper gapp, and now the truck is idling perfect, but when i drive it hard it feels like abooged down 2 cycle dirt bike, my mechanic said i would need to drive it for 20 - 30 minutes to burn off all the build up, the cel light popped on , which he said would go off once the **** burned off .. ???

Hope this resolves this..
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