Hi,
Welcome to the world of craziness. When I was young, I could get new spark plugs for under a dollar each. (Showing my age) LOL I was so upset about two months ago. I had to replace a motor mount on my wife's vehicle. To do it, the plenum needed to be removed and the engine lifted. I had absolutely no time to do it, so I sent it to the dealership. I know one of the techs there and he was going to do it. Although I could have done it myself, we needed the vehicle to be ready for vacation, and there was no time left for me.
Since the plenum was already off and the vehicle now has 100K on it, I said to throw a set of plugs in it. What a mistake. The dealer charged me 35.00 per plug (part cost). So, 6 plugs (thank God it wasn't a V8) were $210.00. Ugh! I was so mad.
The plugs in your vehicle should be Motorcraft. That's what the book shows as OEM. The part number I sent also was from the manual, so it should be correct unless something was updated. Note: The plugs are a high-performance design for "racing." Since you are now part of our family, you're not allowed to race. We don't want to lose you. LOL Spoken like a true father. LOL
Regardless, I feel that even if the plugs don't take care of the problem (and I feel they should), they really need to be replaced.
Let me know how things work out for you. I'm interested in knowing if that takes care of the issue.
Joe
Thursday, October 14th, 2021 AT 6:32 PM