To the guys that have 4.6Ls...how early are you changing your plugs?

 

I have an 05 with 15,000s on it and I changed mine out at 9k miles because I didnt want the troubles the 5.4s were having. I am not 100% sure if the spark plug troubles apply to our engine, but better safe than sorry!!! Plus it wasnt that expensive. It was just a hassle to replace since it required me to remove the fuel rail and all that good stuff

 

i was thinking about changing em at 30K...i am at 22K now...i know that the head material is difference on the triton 4.6Ls

 

Does the 4.6L have aluminum heads ? Does it have the extended length spark plugs ?

 

the 4.6L in the F150 does not have aluminum heads, it has cast heads...i know some people say this is incorrect...check the specs on ford's website...as for the extended length plugs, i am not sure...

 

No the 4.6's do not have the plug breakage problem!

 

Why waste money on plugs when you don't need to change then? The 4.6 in my car is basically the same and at 106,000 miles on the plugs, it still runs as well as new.

 

kevin m has it right--the 4.6 does not have the plug problems of the 5.4-complete different design
jim

 

yeah....i was just wondering at what point ya'll were changing the plugs...