4.6L 2valve V8
New motorcraft plugs,new Denso ignition coils,fuel injectors swapped (good)
3rd. cylinder still misfires
As far as I know the only thing left is electrical or compression (expensive)
Any input would be great

Thanks in advance,
Kip

 

Is the plug on the connector to plug 3 in good shape, get a volt meter on it or something. Or try to swap a coil pack around and see what it does.

 

1/2 the battle is having the right tools

 

Its been said many times on here but when it comes to coils/plugs its best to stick with motorcraft. For some reason they seem to work best. See if you can get your hands on one for cyl3 and see if that helps.

 

Or put one of the old ones back on #3.

 

Yep, that's what I would do. Also, make sure you did not crack the plug during installation.

 

I swapped the coils around too
Still get that #!@* PO303 code
Guess it's time for a noid light & compression Tester

Thanks Everyone

 

Pull the plug, check gap and for any kind of damage.

 

UPDATE: compression test verified my nightmare...It's Dead
0/0
My question is ( I want to put a bigger motor in) How much is interchangable from a 4.6 ?