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Spark plugs in cylinder 3 keep getting smashed. Pretty sure he spun a bearing

acidcrashdburnd

acidcrashdburnd

New member
Local High school kid has a 97-03 GTP with no flow mods and what looks to be a 3.2 pulley Lately the car has been breaking the spark plug in cyl 3. It has done this three times so far. I was thinking detonation at the worst forum or maybe rod play, crank play, or a worn out wrist pin? And what are the chances of the spark plug debris going out the exhaust?

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Re: Spark plugs in cylinder 3 keep getting smashed. (not my car)

time for a another bottom end for the kid. chip chip a roo goes the piston.
 
Re: Spark plugs in cylinder 3 keep getting smashed. (not my car)

Do a compression and leak down test. A borescope would be ideal to look around.

Likely though..he's a murderer
 
Re: Spark plugs in cylinder 3 keep getting smashed. (not my car)

3.2 with no mods tells that story. and im sure it has a stock tune too. bet it felt good while it lasted lol
 
Re: Spark plugs in cylinder 3 keep getting smashed. (not my car)

scottydoggs said:
3.2 with no mods tells that story. and im sure it has a stock tune too. bet it felt good while it lasted lol
Click to expand...
He was running open downpipe for the longest time and started to see this when he put his exhaust back on.
 


Re: Spark plugs in cylinder 3 keep getting smashed. (not my car)

open down pipe, i love kids lol

back in the day, in HS i had a 77 GMC pick up truck, 4 speed and a 350, i put long tube headers on it and a 1 foot pipe with a turbo muffler off each header, and that was it! it was loud as could be. and i liked it, but i was also 17 lol
 
Re: Spark plugs in cylinder 3 keep getting smashed. (not my car)

heh, I drove open down pipe in the Oldsmobile for a week while I was in high school. The cat that we crushed clamp installed fell off while driving. I am pretty sure that it is why I still hear ringing in my ears from time to time to this day.
 
Re: Spark plugs in cylinder 3 keep getting smashed. (not my car)

How else would there be physical damage to a spark plug.

Piece of piston said, 'ELLO MATE.

And bam, you have a busted plug.

Tell him to have fun learning how to pull a motor and go read on how to mod this platform.

Doofy.
 
Re: Spark plugs in cylinder 3 keep getting smashed. (not my car)

blueguy91 said:
How else would there be physical damage to a spark plug.

Piece of piston said, 'ELLO MATE.

And bam, you have a busted plug.

Tell him to have fun learning how to pull a motor and go read on how to mod this platform.

Doofy.
Click to expand...

Three times? I am convinced it is a chipped piston and I can picture chunks of plugs floating around in there too.
 


Re: Spark plugs in cylinder 3 keep getting smashed. (not my car)

i see dents in the bowl of the head and piston, and dents in the valves. and of course chunks missing from around the piston.
 
Re: Spark plugs in cylinder 3 keep getting smashed. (not my car)

First one, thank you ZZP:
chippedpiston.jpg


Second one, failed injector...yay:
DSCN0037.jpg


Love grand prixs, I do.
 


Re: Spark plugs in cylinder 3 keep getting smashed. (not my car)

it is my car, i have an slp cat back, and tune, but the 3.2 was on there when i bought it and i never thought it was that small because i know that would be way to much kr
 
Re: Spark plugs in cylinder 3 keep getting smashed. (not my car)

scottydoggs said:
3.2 with no mods tells that story. and im sure it has a stock tune too. bet it felt good while it lasted lol
Click to expand...

it is my car, i have an slp cat back, and tune, but the 3.2 was on there when i bought it and i never thought it was that small because i know that would be way to much kr
 
Re: Spark plugs in cylinder 3 keep getting smashed. (not my car)

3.2 is way to small to be running on a stock car.
 
Re: Spark plugs in cylinder 3 keep getting smashed. (not my car)

Compression is normal in the cylinder. He is locating a 3.8 pulley for his hub. if its still doing it I am calling out the wrist pin.
 
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