Plug misfire
#1
Plug misfire
02 Explorer 4.0 L 6 cylinder
Just changed plugs last weekend with 125K on the old ones, looked pretty good except for gap.
Installed new plugs and now running very rough. Popped twos code this morning for Number three cylinder misfire and something about number three at low RPM.
Suspect that I have a cracked plug on number three cylinder, any other ideas.
So that I don't have to pull all plugs can someone confirm that number three is furthest back on passenger side (of course hte hardest to get at)
Thanks
Dave
Just changed plugs last weekend with 125K on the old ones, looked pretty good except for gap.
Installed new plugs and now running very rough. Popped twos code this morning for Number three cylinder misfire and something about number three at low RPM.
Suspect that I have a cracked plug on number three cylinder, any other ideas.
So that I don't have to pull all plugs can someone confirm that number three is furthest back on passenger side (of course hte hardest to get at)
Thanks
Dave
#2
did you use motorcraft plugs?
General Specifications Item Specification
Ignition System
Base timing 10° BTDC
Non-adjustable
Firing order 1-4-2-5-3-6
Spark plug gap 1.3-1.4 mm (0.052-0.056 in)
RH original spark plug AGRF22PG
LH original spark plug AGRF22P
New spark plug (either side) AGSF22PP
Lubricant
Silicone Brake Caliper Grease and Dielectric Compound D7AZ-19A331-A (Motorcraft XG-3) or equivalent ESE-M1C171-A
General Specifications Item Specification
Ignition System
Base timing 10° BTDC
Non-adjustable
Firing order 1-4-2-5-3-6
Spark plug gap 1.3-1.4 mm (0.052-0.056 in)
RH original spark plug AGRF22PG
LH original spark plug AGRF22P
New spark plug (either side) AGSF22PP
Lubricant
Silicone Brake Caliper Grease and Dielectric Compound D7AZ-19A331-A (Motorcraft XG-3) or equivalent ESE-M1C171-A
#4
#6
#7
Originally Posted by maceslin
Used Autolite double platinums. Only disconnected one plug at time and have verified good contact on all tips.
Did not use dielectric grease.
Thanks for hte diagram, as feared number three is hte difficult one to get at
Did not use dielectric grease.
Thanks for hte diagram, as feared number three is hte difficult one to get at
I think most people will agree, use the Motorcraft plugs. They really are the best for Ford products.
Ed
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