****** - Verified Buyer
4.5
Our 2004 F150 needed a tune-up. And how.We just acquired it from family last summer, and it has about 225k miles on it. And it had the original spark plugs inside.The recommended gap for this model is .054 - .056". The plugs that came out of the truck were in the neighborhood of .085-.100". It's crazy that it was even running. Well, it stopped running just after Christmas, but that it was running till then is incredible. Also incredible was that none of the plugs were seized.I followed standard procedures in getting the plugs out. Some basics:- blast some compressed air into the coil socket before removing the old plug so that the lingering dirt, rust, etc., will not fall in when there is no plug.- I squirted a little WD-40 into the spark plug socket attachment just before inserting a new plug. My thinking was that it would help to release the socket once it had been screwed in. I don't know if this is standard procedure, but I went 7 for 7 on this (the 8th plug is awaiting a ratchet wrench because my standard attachments could not fit between the screw on the coil pack and the fuel line above).- make sure to have some dielectric grease on hand to put onto the threading of the plug before screwing it in. If you don't have any handy, you can get a small pouch of it at your local auto parts store for a buck or so. No need to buy the $5-$10 canisters unless you're going to be changing plugs in a dozen vehicles.- be patient. It took me about 3-4 hours all told, not including a couple extra trips into town to get a specific wrench (7mm), to get the dielectric grease, WD-40, and an extra attachmentIt is well worth it. This is a $300+ job if a mechanic does it, and our mileage has already gone from 14ish to over 18. The plugs and the few tools I had to get to finish the job will be made up quickly in the gas savings.Spark plugs were as discribed. Double check the gaps. Just install properly and you're good to good. Only issue is that Ford monopolizes their products and they do not recommend using any other brand than Motorcraft. Not even Denso but they are great plugs! Yet their COP is made by Denso with the Motorcraft name on itWorks as advertised.used these to replace the plugs in my 2000 Lincoln Town Car at 103,000 miles. There were autolites in there when they were replaced, so they had been changed once before. great plugs and should be good for 100k more milesthese are the genuine motorcraft parts and are built to last. I will not put anything else on my ford trucks.Can't beat OEM.great itemLo recomiendo
