Serious Spark Plug Problem.....Help Please!!!!

[Green Ex]

Alright, I've got a '99 Explorer with the V-6 in it. It's only got 58k miles on it and it has something seriouly wrong with it. It keeps fouling out spark plugs. Just one, and I think it's the same one each time. This car is under warranty so I'm not the one doing the work.
They told me today that it's a different plug than last time. Either way, it's fouling out a sprk plug every 2 months.

At 50,765 miles they replaced:
*Ignition Coil
*Spark Plugs
*Sprak Plug Wires

At 53,750 miles they replaced:
*Spark plug wire set (defective)
*1 spark plug (fouled)

Now at 58,000 it's back in with another fouled plug.

Anyone have any idea what could bne causing this??

I think they know something but are just patching it up until my warranty runs out....

Thanks so much for any help or ideas!!

JEFF

 

[JDraper]

Welcome to the board!!

What is your plug fouling with?? Oil?? Gas?? If it's oil, it could be a bad ring or bad valve seals. A compression check can help narrow it down. If it's gas, it could be a bad injector. Did they only replace one coil, or the whole coil pack?

 

[Green Ex]

Sorry I left that info out...

It's fouling with GAS
and yes they replaced the whole coil pack.

Thanks,
JEFF

 

[RickOTR]

Could be the fuel injector is sticking open or is bad. Had this happen to me at 32,000 miles. Dealer replaced it and no more fouled plug.

 

[Alec]

Yup, could the the injector. Also check that all the intake manifold bolts are tightened to specs.

 

[monkeymanafrt]

Check out my post to see what happened with my X.