A V7????

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Jul 10, 2015 | 01:23 PM

Beau109

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Joined: May 2015

Posts: 14

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From: Rifle, CO

A V7????

Replaced all plugs, wires, cap and rotor. When I bought my '92' F-150 it had a slight miss to it. The tranny (E4OD) was shifting into high gear immediately after it shifted to 2nd and I thought perhaps that was the cause. When changing plugs I found that the plug in #4 cylinder had no gap and that it looked as though someone had stuck it in grease when changing it previously. There was a heavy fuel smell as well as if the injectors were putting too much gas overall. I ran injector cleaner through it but the gas smell is still there. Also, after putting the new plugs in and everything else, the #4 plug is still missing until I get up to 50-60 mph. When I pulled the plug, it was still soaked in gas.
What might I try next......I'm out of idea's...

Jul 10, 2015 | 01:33 PM

timbersteel

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Joined: Mar 2005

Posts: 4,698

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From: Mexico, Missouri

Need to find out if there is spark to the plug. Then if you know the plug is good, my guess is a failed/leaking injector. It happens.

Worst case scenario, if this injector were to completely fail in open position, then it will fill the cylinder completely up, then up to the top of runner on the lower intake. Could possibly hydro-lock and sorts of disaster set in.

But, I would just check first to see if you have spark at the end of the plug with it grounded. Or whatever method you choose.

Jul 10, 2015 | 01:37 PM

GoinBoarding

Cargo Master

Joined: Mar 2010

Posts: 3,342

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From: Laramie, WY

Check compression on that hole while you have that plug out.

Jul 11, 2015 | 07:08 PM