plug blew out...

[snidehockey]

(2000 GT - full exhaust CAI and TB)

I thought it was a rare thing...I followed the Bullit archives tips on changing the plugs. Checked them again a week or two later and all seemed well, except that the Coil on the Driver side cylinder, second from the front didn't quite sound or feel like it was snapping or popping onto the plug the way the other seven did.

I didn't think much of it but on Friday the car seemed to almost buck around 2k rpm in fourth and fifth and especially when on an incline. There also was a hiss for everytime that cylinder fired. Well the next morning I got in the car at a Uhaul truck drop off place (just moved) and fired it up. The hissing was obnoxious and then a thumping followed...I ran out and popped the hood and wouldn't ya know it the COP was banging on the fuel rail.

Wouldn't ya know it the plug was just laying in there.

To complicate things more the 7mm bolt holding the COP on is stripped (just spins) so I had to break the COP to get it off to get access to the plug.

Luckily a Uhaul dude had a ratchet and plug socket so I got it back together and drove home in a torrential Florida downpour. On the way it threw a CEL and started blinking, plus was bucking even more (I knew it was misfiring)

Got home found that the Cop wasn't even staying on the plug and the part of the plug that you would gap was not there

ANYWAY, got a new plug and COP, threw it back together and she's good as new.

 

[007]

Got home found that the Cop wasn't even staying on the plug and the part of the plug that you would gap was not there

Where did that bit go? In your motor!? And how are you good as new without doing the whole insert thing - didnt you strip the threads in the heads?

I have 45k on my stock plugs and they are still in there solid. I've really been thinking that I'm better off NOT changing plugs until I absolutely must do it. It seems like your so much more likely to have trouble shortly after changing them out.

This problem really sucks

 

[snidehockey]

oh yeah, I forgot to mention that...

The plug actually didn't blow the threads. It slowly must have vibrated itself til it was all the way unscrewed.

As for that piece of metal, It looked more like it melted cause the very little bit remaining was almost charred, but it could have broken I guess - not sure.

 

[the98stang]

I guess people aren't reading the sticky we made on this topic....

 

[hotstang_46]

hey SNIDE......

i hade the same exact thing happen to me when I was sitting outside of a starbucks.....had her towed home and found the threads were still ok and the plug threaded back in....

1 week later and about 15 miles after the last time I checked the problem plug it blew again and all the threads were completely stripped on the head....

Not to say this will happen to ya, knock on wood....but just FYI I wouldn't travel too far away from home for a little...

Or, you can take the opportunity like i did to start upgrading if it's not your DD

 

[kylebgt]

oh yeah, I forgot to mention that...

The plug actually didn't blow the threads. It slowly must have vibrated itself til it was all the way unscrewed.

As for that piece of metal, It looked more like it melted cause the very little bit remaining was almost charred, but it could have broken I guess - not sure.

Your lucky, I know of plenty of people who have stripped the threads on the head. Lets just say that replacing the threading on a head it alittle more involved than what you did

 

[hotstang_46]

Your lucky, I know of plenty of people who have stripped the threads on the head. Lets just say that replacing the threading on a head it alittle more involved than what you did

hey kyle......move that spoiler back a couple inches.....nice looking cheap mod bro

 

[kylebgt]

hey kyle......move that spoiler back a couple inches.....nice looking cheap mod bro

I've heard of that before but doesn't it leave holes?

 

[snidehockey]

I guess people aren't reading the sticky we made on this topic....

trust me, I read all the spark plug blowout stuff before I changed the plugs. I followed all of the bullit archives instructions too.

One thing thats good though is it gives a hissing sound everytime that cylinder fires for a little bit before the plug finds it way out.

I don't want to get too confident in it, but I've since driven about 200 miles - some of them relativey hard - with no issues.

 

[Dusstbuster]

trust me, I read all the spark plug blowout stuff before I changed the plugs. I followed all of the bullit archives instructions too.

One thing thats good though is it gives a hissing sound everytime that cylinder fires for a little bit before the plug finds it way out.

I don't want to get too confident in it, but I've since driven about 200 miles - some of them relativey hard - with no issues.

I'd still be vary wary. I wouldn't be surprised if you blew the plug again in the near future, and I doubt you'll be as lucky as far as the threads are concerned that time.