IMPORTANT, please respond

[jessetoler]

so my story starts here, i drive a 2000 gt, and when i went to start it recently, the engine turned over and *POW* i heard an extremely loud pop. turns out that the pop was a spark plug exploding out of the head. whoever owned the car before me apparently cross threaded the plug and when it BLEW out it ripped all the remaining threads out with it. well in an attempt to fix it my dad tapped and reamed the whole and placed in an insert. we got a new spark plug and everything, but the cylinder continues to misfire.

in addition my cats are bad and the coating inside im guessing is pinging all around, i was wondering if the cats being in such bad condition could cause the engine to misfire after fixing the plug....

PLEASE!! any response or ideas would be greatly appreciated, thanks.

-Jesse

also, cylinder 1 is where the the explosion that ruined my motoring life occured

 

[HoustonGT]

so my story starts here, i drive a 2000 gt, and when i went to start it recently, the engine turned over and *POW* i heard an extremely loud pop. turns out that the pop was a spark plug exploding out of the head. whoever owned the car before me apparently cross threaded the plug and when it BLEW out it ripped all the remaining threads out with it. well in an attempt to fix it my dad tapped and reamed the whole and placed in an insert. we got a new spark plug and everything, but the cylinder continues to misfire.

in addition my cats are bad and the coating inside im guessing is pinging all around, i was wondering if the cats being in such bad condition could cause the engine to misfire after fixing the plug....

PLEASE!! any response or ideas would be greatly appreciated, thanks.

-Jesse

also, cylinder 1 is where the the explosion that ruined my motoring life occured

Do a search on this topic. It has come up ALOT lately and i guarentee you'll find your answer

 

[COramprat]

Did you reuse the coil or replace? When the plug blew it could ahve damaged the coil.

 

[jessetoler]

we thought the coil might be bad, so we switched it to a different cylinder to check and the problem still remained on cylinder one. ford wants 2000 bucks to fix it, but i refuse to pay that much for when like a grand more i could buy an ENTIRE engine

 

[BurningRubber]

Damn man, that sucks.

Did you find the plug that blew out? If so was it 100% in tact or what? Its possible that it blew apart and put a hole in the piston. I would do a compression test to see how that cylinder is doing. Not hard to do at all.

Next up, I would take the clogged cats of there asap. Now might be a good time to upgrade to a catless midpipe, or just have those replaced. Clogged cats can make a motor run like crap.

Thats where id start at. And make sure all your other plugs are tight!



And yeah, 2000 seems very steep. Do you know what all they wanted to do? Possibly replace that cylinder head? If so they are like $300-350 a head new and I beleive that is assembled!