Broke spark plug while driving

[Wicked One]

What would cause a plug to break while the car is running. I am talking the tip of the plug, about an 1/8 th inch total.

Thanks.

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[stkjock]

Broken or melted?

Detonation is my first guess


Any pics?

 

[irishpwr46]

unless a piston hit it.

 

[stkjock]

unless a piston hit it.

Also possible, but I think it would have happened when he first fired the car.

 

[Downs]

Which end?

 

[Wicked One]

The electrode side. Will post some pics on the am.

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[OneQwkStang]

Detonation my guess.

 

[VTXFrank]

Broken or melted?

Detonation is my first guess


Any pics?

Also possible, but I think it would have happened when he first fired the car.

Yep and for sure.

 

[Downs]

Detonation I'd agree with.

 

[bigray327]

Do you take that thing over any cool jumps?

That would do it. I don't know if detonation would physically break a plug. I bet someone dropped it before it went in.

 

[Wicked One]

Here is the plug in question.

 

[stkjock]

HT0?

That is bad combustion.

 

[Marc s]

That's the kind of damage I see when the meth stops working.

 

[Wicked One]

meth wasn't hooked up. Yep, these are HTO's or at least started off that way.

 

[19COBRA93]

That's pretty brutal. I've melted down some plugs and even pistons, but have never had a plug that bad.

I imagine the car wasn't just running, what were you doing when it happened?

 

[bigray327]

meth wasn't hooked up.

Pretty obvious what happened, there.

 

[Downs]

Holy hell that car still runs?


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[NickSezz]

How's the rest of them look? Leak down test ftw...

 

[Wicked One]

Replaced the melted plug..seennmm Car ran ok but there was no vacuum. It was rough. After dropping a boroscipe in the cylinder, it looks as if the piston is fried. This happened when the tunerr and I were cruising around. I power shifted into 2nd, the car backfired then I heard what sounded like I ran over gravel. I immediately why'd is doj


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[Scott_0]

^^yup that would be the spark plug and most likely piston chunks going through the exhaust