Do you have ngk or motorcraft sparkplugs?
Reviews of Motorcraft spark plug
60 votes
I replaced everything with Motorcraft plugs and wires and it has run great since.
I also put Motorcraft new plugs back in. Truck is happy. I'm happy.
I have about 30k on my plugs (Motorcraft OE). I've no problem buying them again as they've held up great
That's better than the Motorcraft plugs I received from Rockauto. They were bouncing around (no longer in their original little boxes) in a large shipping box with 2 sets of brake pads.
Iridium plugs suck on fords.
switched to the back to the motorcraft spark plugs $15 a piece fixed it for a while
Oem Motorcraft plugs are always my go-to. They generally last around 80k miles.
I heard from an old ford mechanic once that ford designed their ignition system around the motor craft plugs and no other brand plug will run right if installed. Since then only motorcraft or autolite in my fords.
Modern Ford engines tend to work best with Motorcraft or NGK spark plugs.
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