Is this common on the 4.6? I thought it was only the 5.4 just curious because i changed the spark plugs in my car today and the number 3 cylinder had one of those heli-coils on the plug threads.
Also the number 4 cylinder plug looked like it wasnt firing it was all soaked in gas and oil. No check engine light or anything but the car is running terrible theres a decent miss at idle. Grrr i just want to enjoy this car and not have to go back to the dealer.
Yes. This happened to me two summers ago. If I remember right Ford didn't put enough threads in it. Fairly common, if one was already heli coiled then the PO must of had one blow out.
-Barry
2003 Ford Mustang Dark Shadow Grey 4.6L GT
2004 Ford F-150 Super Crew Dark Shadow Grey 5.4L
IMO if you torque the plugs to the factory specs and don't periodically maintain the spec this is going to happen and will keep happening. I torque most spark plugs to 20 - 25 ft-lb.
Wolfpack Speed, Inc.4290 Campbells Run RdPittsburgh, PA 15205(412) 279-4902
Yeah, I go over mine about once a month during the summer.
I've never torqued mine though, always hand tight snug.
Last edited by 95V6; 03-30-2013 at 12:08 AM.
-Barry
2003 Ford Mustang Dark Shadow Grey 4.6L GT
2004 Ford F-150 Super Crew Dark Shadow Grey 5.4L
Been about 10k since mine were done, prob gonna check em soon but dont wanna open a can of worms ha!
Dan -- 2003 Cobra DSG Coupe #6009
If it looks good, you'll see it. If it sounds good, you'll hear it. If it's marketed right, you'll buy it. But if it's real, you'll feel it. IG: @donuttrump
I know in 03-04 cobra land its common. Most 03 cars had the crappy 4 thread heads. Late 03 and all 04 cars got the I think its 9 thread heads. I got lucky my late 03 is 9 thread. I also put a tiny bit on antiseize on mine when I wind them in. I also just do hand snug, Always have on all cars and never had an issue.
Yea not sure what heads are on mine but I've already got a time sert in mine. Prob will pop the covers and just make sure they're still tight. When the car blew the plug out, some of the others were only hand tight to pull out.
Dan -- 2003 Cobra DSG Coupe #6009
If it looks good, you'll see it. If it sounds good, you'll hear it. If it's marketed right, you'll buy it. But if it's real, you'll feel it. IG: @donuttrump
If you take one out. Take a thin piece of metal, like a coat hanger. Put alil tip on one end and insert it in the hole. Slowly pull it out and you will fill it bump over the thread ridges. Easiest way to find out what thread heads ya have. Or if by chance the owner before you had revised heads put on it
It's a spark plug not an oil filter!Originally Posted by 95V6
lol that is true john.
has anyone ever had problems with the number 4 spark plug getting wet?
for some reason #3and#4 are the only 2 cylinders that those those accel cop's makes me think that someone was trying to cover up something :(
reason i say is because the number 4 plug wasnt firing at all. the part of the plug that goes into the cylinder portion, like the ceramic and where it fires was soaked in what looked like a gas/oil substance... the ignition coil boot was submerged in antifreeze, i think i figured that out because that heater hose that goes onto the intake manifold right near cylinder 4 needed the clamp tightened up because the hose was leaking and going right into the plug well.
i clean the coil up but its running like shit :( after putting new plugs in, hard to start has a horrible miss at idle i used motorcraft plugs. Im going to re-pull the number 4 plug and make sure its firing.
Last edited by jasons_98gt; 03-30-2013 at 12:06 PM.
heres a couple pictures of the beast
I would recomend to do a compression test on that cylinder.
Where are you from?
-Barry
2003 Ford Mustang Dark Shadow Grey 4.6L GT
2004 Ford F-150 Super Crew Dark Shadow Grey 5.4L
Are you running all Accel COP's? I would go back to using the Motorcraft COPs to be honest. One thing that is coming up in my mind to consider is if you possibly busted your intake manifold gasket or if the intake manifold is cracked?
JLT TRU CAI|ACCUFAB 70MM TB|PP PLENUM|MAGNAFLOW CATTED TRU-X|MAGNAFLOW PERFORMANCE EXHAUST
Canonsburg. Im gonna let the motor cool down and reckeck that plug and see if its firing..
And no there were just accel cops on cylinders 3 and 4. Making me think someone put a hotter spark theres for some reason....
Is that the Mustang that was for sale Community Motors?
-Barry
2003 Ford Mustang Dark Shadow Grey 4.6L GT
2004 Ford F-150 Super Crew Dark Shadow Grey 5.4L
Lol yeah thats the one
Good news plug 4 is firing nice and clean now
Good Good.. If you have the resources available, I would run all the same, rather than 6 of one and 2 of another..
JLT TRU CAI|ACCUFAB 70MM TB|PP PLENUM|MAGNAFLOW CATTED TRU-X|MAGNAFLOW PERFORMANCE EXHAUST
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