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Hello. I have a 2003 4.7 with 58,000 miles and I am wondering wich spark plugs to go with for better perfomance and gas milage. Thank you for your help.
Stick with what the OEM uses, Champion plugs. I am using Champion Iridium Truck plugs and they are the hottest burning clean plugs I have come across. Expensive but they burn clean and my engine idles much smoother with these plugs. Plugs supposed to last 100k miles.
I just put in plugs, stock Champions. They seem to be just fine. Wanted to replace the rotor and wires, but I can't get to the rotor, it's way in the back of the engine compartment, seems to be a huge pain in the @$$ to get to. Any ideas? Also, what wires should I get?
Take the air hat off and you should have no problem. Otherwise it looks like it would be a PITA I'm gonna be changing mine soon. Hopefully I can dupe the wife into thinking the MSD ignition components will be what I need at the price they run...