Spark show
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Tuned
Joined: Dec 2012
Posts: 432
Likes: 112
Spark show
I got an 11 F150 Plat 6.2L and there was tapping/clicking noise at the top of the engine. Closer inspection reveals 4 coils are visibly sparking to the head to some degree. I coated the boots (inside and out) with Ford Dielectric grease and it runs much smoother now. I am wondering now if the coils should be replaced.
Records show plugs replaced about 55K ago.
Records show plugs replaced about 55K ago.
Fleet Mechanic
Joined: Mar 2013
Posts: 1,729
Likes: 80
From: New Jersey
Right now I have 16 plugs, a set of wires and a set of boots sitting in a box waiting for the a nice enough day when I am home to replace the parts. I am at 75,000 miles on my truck at this time.
Tuned
Joined: Feb 2019
Posts: 278
Likes: 183
I just ran through this with my 2016. Found that I had 4 boots that were sparking. My issue was that after pulling the boots, the plastic fins on the coil had also disintegrated to the point that the new resistors wouldn't seat. I Ended up replacing all 8 to get it back to 100% and only have 2 of the old coils that are good enough to keep as backups. Planning to just start doing boots/pills every 30k as part of my routine maintenance. Just sucked to drop that much cash replacing low mileage coils that only had issues with the plastic.
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FordF350Baby
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