So this is my first time doing a tune up on a 4.6L 2V. Its in a 95 Tbird, and i want to make sure i do it right. First off does anyone know if these are the ones that only have 4 threads in the head? And do they use coventional spark plugs? I got a set of autolite 764`s and i gapped them at .056. Do the early mod motors required the special tool for the plugs? It looks like i can take em out with a regular 5/8th Plug socket. I already got antiseize and dieelectric grease so im good there. And my last question is can i use brake cleaner on the MAF sensor? Ive been told that its what most shops use but i want to make sure. Thanks!
Okay well the early heads have more than four threads. You dont need the special tool. Just the 5/8 socket. And you should not use brake cleaner. Its too agressive. And the update on the tbird is that one plugs was completly covered in oil and one was wet. all the others were clean.
Glad to see you got this under control on your own! I hate when I start a thread and end up fixing it by myself. .056 sounds kinda big for a gap. Got MSD? If not, that may be a bit large. I don't know for sure, since I don't run one of those engines.
The sticker on the engine bay said to gap them between .052 and .056 . These engines use two coil packs to fire off the plugs. The actual swap was so easy compared to a windsor. The plugs are right next to the intake and the previous person used antiseize so they came out like butter. All the ones on the drivers side were nice and tan. But on the passenger side are the issues. Number one was clean but number two was all covered in oil the threads and the electrode. I did a search and it looks like the valve seal are the first things to go in these engines. Cylinder number 3 had oily threads but the electrode was clean i suspect the o ring on the value cover is bad. And plug number four was rusty in the thread area im guessing water got into it. So now im planning a seal job on the engine. I dont know how hard it is on these overhead cam engines, first thing i need to get is the tool.
Here are the plugs. Number one was the clean one. Number two was oily all over. Number 3 was oily only on the threads, also the electrode was wet and smelled like raw fuel. And number four was the rusty one.
