Oof.My fav. was always the spark plug changes in the 5.4 Triton motors. IYKYK.
Had the dealer do those at 50K when I started hearing about how they break. Fortunately, by that time, the two-piece plugs were updated to a one-piece design. But that #4 cylinder isn't fun. There's stuff mounted to the firewall and some hoses that need to be moved out of the way to get to that one, which I found out when I changed the coils somewhere after 100K.
Sponsored