Finally 4.6 Misfire fixed!!! Yipee!!!
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Member
Joined: Nov 2004
Posts: 18
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From: Nashville
Finally 4.6 Misfire fixed!!! Yipee!!!
I finally fixed the misfire I was having on my '97 4.6! Here is what I tried and the result:
Replaced spark plugs several times as the problem seemed to go away for awhile but only to return.
Replaced wires several times. Still no fix.
Relpaced both coil packs...nothin...
Bought a 2.50 tube of dielectric grease and loaded up the boot to the cyl. giving me the misfire code and Viola!!! It's fixed!!! Has been running perfect for a week now with not even the slightest miss.
Just thought everyone might like to know.
Replaced spark plugs several times as the problem seemed to go away for awhile but only to return.
Replaced wires several times. Still no fix.
Relpaced both coil packs...nothin...
Bought a 2.50 tube of dielectric grease and loaded up the boot to the cyl. giving me the misfire code and Viola!!! It's fixed!!! Has been running perfect for a week now with not even the slightest miss.
Just thought everyone might like to know.
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Joined: Jan 2005
Posts: 5,389
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From: Fort Worth,Tx
cool man so u replaced the wires the plugs and the coil packs and the grease is what fixed it.. thats weird because the grease is non conductive.. its for water barrier to keep the water from shorting out the wire when water gets past it..
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Member
Joined: Nov 2004
Posts: 18
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From: Nashville
I looked inside the boot before I put the grease in and you can see marks on the inside of the boot where the fire (spark) was traveling down the inside of the boot and shorting on the nut of the plug. I thought that pulling on the plug wire kinda at an angle to get it off the plug may have been the problem. But when I replaced the wires that sholud have eliminated that problem. I don't know but maybe the inside diameter of the plug boot is just slightly larger than some of the others. Either way putting the grease in the plug worked and is still working so that is all I care about! I never even used the grease ever before and I have changed a lot of plug wires in my time. I will use the grease in the future though.
Moral: Give the Mis some grease and she will per like a kitten! At least mine did.
Moral: Give the Mis some grease and she will per like a kitten! At least mine did.
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Joined: May 2006
Posts: 42
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Yes #1 rule at any plug change is dielectric grease.Use it anywhere there is an electrical contact including light sockets and switches .Hope you put it at the coil packs as well!Squeeze it into the boot and work it around with a small screwdriver.Clean it out and reapply at plug changes.You used to get a tiny tube with every set of plug wires but as of late the cheap a$$ manufacturers stopped putting it in the box.Don't even come with ford Racing wires anymore.
cheers
cheers