Changing plugs in new 5.0

[viperakron]

New to Fords so excuse this simple question. I've heard horror stories on broken plugs in Ford Mod motors, so want to get it right the first time. I've got a 12 GT with 7000 miles. Want to see how the plugs are burning with my tune after a run at the track.

I need to know the procedure for removing the wire to the stock coils? I released the red clip but the connector doesn't want to release. Is there something else to release? Or just pull harder?
I see from an accel video on line that the coils unbolt and pull out. Now are these motors prone to breaking plugs like the old ones? Is there a special plug socket? With so few miles I would hope there is no carbon and the plug release easily.

 

[manolith]

the plugs wont break unless go ape shit on them and torque the hell out of them. as for the coil just pull the red clip and pull the connector and it should come right off.

 

[scott_0]

the plugs are super easy to access, just dont side load the socket/extension/ratchet and youll be fine. I believe you have to squeeze the underside of the coil plug to release it, I had a tough time getting mine off on the #8 (for a piece of mind peek)

 

[djniknala]

Start by unplugging the battery terminal.

 

[UnleashedBeast]

The broken spark plug horror was in the 4.6L 3V engines used in the 2005 to mid 2008 model year engines, not the new Coyote 5.0

 

[five.slow]

Yep iv known 2 people with 3v motors with plug issues. No 4v motors though. Beware of the battery wires!!!!!!!!!

 

[Rct851]

5.4 in the navigators gave people bad days as well I think

 

[JerryC]

Start by unplugging the battery terminal.

Do not skip this step! The chances of you blowing the fuse on the battery if you do not disconnect the battery are better than 80%. The extension you use to get the plug out goes right by the fuse terminal and if you touch it it blows and you wont know it.

 

[Blazer707@TBR]

Do not skip this step! The chances of you blowing the fuse on the battery if you do not disconnect the battery are better than 80%. The extension you use to get the plug out goes right by the fuse terminal and if you touch it it blows and you wont know it.

To make things easy and error free I would recommend just removeing the battery.

Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

 

[jas11151990]

I just removed my battery to make things easier

 

[mtrsprt]

Having a good array of tools, will allow you to leave the battery in place with no issues. Different length extensions, universals etc, always come in handy.

 

[JAJ]

As many of the others said, disconnecting the battery ground lead (not the positive terminal) is really important. When you change the #4 cylinder plug, it's easy for the socket wrench to touch the positive battery terminal. At best, it'll blow the fuse; at worst, it will burn a hole in the aluminum sleeve around the sparkplug down inside the head, and that's a piece that's not in the parts book - it's a part of the head itself. So, disconnect the ground terminal and all will be well.

As for the plugs, they're pretty stout. No problems changing them.

 

[Tispho]

I released the red clip but the connector doesn't want to release. Is there something else to release?

You have to press down on the black part after releasing the red clip. Then the connector should come right off.

 

[UnleashedBeast]

5.4 in the navigators gave people bad days as well I think

The 5.4L with 3V heads had the same problem as the 4.6L 3V engine during that time frame.