Long time no see all!

[ZBlackBeast]

Hey, uts been WAY to long since ive posted here! First of all... How is everyone doin?

Now, to the questions etc.. My step father about a year or so ago bought an 04 mounty with a 4.6.. Its got 131k on her now and she runs stong. Its got a CEL and its running lean on both banks and i can hear a vacuum leak.. Ok, thats easy i can probably find and fix that as long as its not a plenum gasket. I was going to do a tune up on her too.. I have yet to look under the hood extensively because i just got back from vacation and he told me while i was on vacation.. This is a COP motor... correct? I plan on doing a full tune up for him and am basically wondering which plugs these motors like best? Anything else you recommend replacing other than air filter, fuel filter, oil and filter?

 

[zerodevil]

welcome back,

First of all stick to motorcraft spark plugs and avoid bosch like the plauge, they will fire out of the cylenderheads on the 4.6L... i fired 3 in less than a year. It is a COP motor. Oil and filter should be full sythetic and a k&n or royal purple filter, though the cheep stuff works just as well. the fuel filter should be replaced, the tranny fluid as well as front and rear diff fluids are likely due for a change at 130K as well. im sure there is somthing ive forgot but this covers all the big stuff.