What's up ya'll, I've got a slight problem and need some help from the experts. I've got a 2003 Mustang GT, and I recently bought on ebay a new set of 9MM plug wires (brand is Ford Motorsports), what I didn't realize is that they are supposedly for the 96-98 GT. Can I still use these in my 03? Also I bought NKG55 spark plugs, are these a good plug to use?
96-96/99-04 4.6 Plug Wire Interchange
- Thread starter S22C11
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CanadaStang
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Nater
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CanadaStang
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S22C11 said:
99+ Mustangs use Coil-on-Plug technology. There are no plug wires at all. An individual coil sits over each plug.
As for the plugs, I'd stick with motorcraft plugs. They work well in the Mustang and unless you have high miles there is no reason to risk stripping a plug hole to change them out.
I realize the new technology, but its things like this that makes me wonder... http://cgi.ebay.com/ebaymotors/ws/e...=8020701296&rd=1&sspagename=STRK:MEWA:IT&rd=1
stangGT97
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tonys5.0
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Forgive me if I'm missing something here but how easy is it to strip a plug hole on a 2003 mustang?
I have an '04 and was considering changing my plugs soon due to a couple of past misfires. I've always changed my own plugs on past cars including my late '87 5.0. Is there something I should know about changing plugs on a modular engine?
tonys5.0 said:Forgive me if I'm missing something here but how easy is it to strip a plug hole on a 2003 mustang?
I have an '04 and was considering changing my plugs soon due to a couple of past misfires. I've always changed my own plugs on past cars including my late '87 5.0. Is there something I should know about changing plugs on a modular engine?
no it's easy to change the plugs on your 04 in fact it's easier than the plugs n a 5.0
all you do is remove the coils ( under the fuel rail) and the plugs are down the wells. when you put them in put a dab of anti seize on them and torque em down to 13 ft/lb
the only thing to keep in mind about 4.6 plugs is they tend to back out. even the factory ones installed at the assembly line have loosened up. when this happens the plug vibrating will strip the threads off the cylinder head causing the plug to blow out.
So just to be safe check your plugs and retorque them every couple of oil changes or so.
tonys5.0 said:Forgive me if I'm missing something here but how easy is it to strip a plug hole on a 2003 mustang?
I have an '04 and was considering changing my plugs soon due to a couple of past misfires. I've always changed my own plugs on past cars including my late '87 5.0. Is there something I should know about changing plugs on a modular engine?
The mod motor is very easy to do plugs on, it's just that Ford and their lovely engineering team poorly designed the spark plug bung. As a result, many vehicles including the Mustang with the 4.6L tend to shoot plugs out of their heads from time to time. The head is soft aluminum and ford didn't put enough threads so if installed too tightly, you can actually strip the plug hole. Then you are required to either heli-coil or buy a new head.
Just be sure to not overtorque the plugs when you install them
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