Intermittent mis in 2000 explorer 4.0 | Ford Explorer Forums

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Intermittent mis in 2000 explorer 4.0

NorDakexplorer

New Member
Joined
May 29, 2009
Messages
8
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0
City, State
Minot
Year, Model & Trim Level
2000
A bit of history
Bought the ford and was damaged in transport
It sit for 2 years while I repaired the body damage drove it from time to time to keep the fluids moving.

After driving it daily for a week or so it developed a intermittent mis no check engine light I was thinking injector cleaner ran 2 tanks through it one with injector cleaner still has a mis from time to time.

I though I would check the plugs to see if I could determine the cyl that was missing.
All plugs looked like new very clean almost on the verge of running lean.

Cleaned all the carbon from plug threads re-installed, check engine light came on, still intermittent mis.

Still thinking injector as there is no pattern to the mis but seem to be from the same cyl going by feel only.

But why check engine light after plug R&R, just a coincidence? Or is there something a plug R&R can do to trip the check engine light?

Here it is with new roof and rack covered with rhino lining

DSCF2850.JPG
 



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Found it but ----(Picture)

Sure wish I would have found it the first time around must be the old eyes Im looking through!
plug.JPG
 












Cracked insulator on a spark plug. Good catch. Reason for the CEL after removal first time maybe that you made it a bit worse handling it.
 












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