ok i got 10 days off work for thanksgiving.an im goin to change my spark plugs,what is a good brand to use,i was goin to pick up the autolite copper tops for it.what is the gap for these 4.6 motors{i dont have a manual} an is there anything i need to know about changing them,do i need to take off the fuel rail or anything beside the intake tube? an do i need anything else beside the spark plugs

 

If I were you I would the NGK TR55's... Cant really gowrong with the NGK's.

The gap on the plug is .054

You will not have to remove the fuel rails, good luck..

 

NGK V-power TR55... part number at any advance auto parts is #3951... the gap is .052... these are great plugs i just changed mine 2 days ago.. you need to take off your intake.. and your fuel rails...listen carefully.. there is a fuel shut off swith in your trunk on the driver side... you have to shut it off.. start the car till it dies to release the pressure of the fuel in the rails or they will blow gas everywhere.. then disconnect negative terminal on your battery and proceed with the fuel rails...coil packs... and spark plugs


I had to remove my fuel rails on my 04.. there was no way around it

 

Autolite or NGK V-Power TR-55 are both just as good, just one is made here and the other in Japan. i've used them both and there is no real "difference". the gap for our cars are (.052-.056) reason most people will say .054

you do not have to take off your fuel rails.. but you do have to take off your intake (not the manifold)

and im pretty sure you know what tools to use and how to do the rest

 

so the fuel rail doesn come off,how often does that boot need changed

 

What boot?

 

https://mustangforums.com/m_1271598/tm.htmthere ya go no need to remove fuel rails just take off the COP held on by a screw and tka ehte plug out put soem anti seize on it and snug em down, the intake in front of the throttle body has to come off tho to get to the pass. rears

 

ok guys sorry.. i just found it easier to remove the fuel rails... i mean it takes maybe 3 minutes longer but i did all the spark plugs and got the car back together in about 40 min.. just my .02 but i guess you can do it either way.

 

Think that will be enough? lol

 

u dont need to remove ur fuel rails just take the intake off. youll have better luck w/ a swivel for the last 2 on the passenger side (the 2 closest to the firewall).

removing the fuel rails easier? its not in the way at all... thats just extra work