cracked spark plugs
Thread Starter
Racer
Joined: Jun 2003
Posts: 308
Likes: 0
From: Granada Hills CA
cracked spark plugs
I have a 2001 with ATI kit installed, I had a misfire code and took the car to the dealer. The dealer said that 3 of the spark plugs are crackedat the porceline. What is causing them to crack. I had replaced the plugs about 2k miles ago with the ATI install. :(
Le Mans Master
Joined: Oct 2000
Posts: 6,507
Likes: 722
From: Sausalito CA
Re: cracked spark plugs (LS1MASACRE)
Either they were cracked before or during installation.
I can't imagine the tension of a spark plug wire cracking one. I also assume that the exhaust or brackets are not on contact.
Maybe a co-member could comment on excessive engine heat cracking a plug...yet I have never seen this happen ...even with mis-running two-stroke motorbikes...plus I would think your dash guages would have warned of tempreture errors..
I can't imagine the tension of a spark plug wire cracking one. I also assume that the exhaust or brackets are not on contact.
Maybe a co-member could comment on excessive engine heat cracking a plug...yet I have never seen this happen ...even with mis-running two-stroke motorbikes...plus I would think your dash guages would have warned of tempreture errors..
Thread Starter
Racer
Joined: Jun 2003
Posts: 308
Likes: 0
From: Granada Hills CA
Re: cracked spark plugs (C5XTASY)
the stock sparkplugs. I am having NGK TR6 plugs installed. I will check them soon too see what is happening. I will post any results I come up with. :skep:
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Pro
Joined: Dec 2002
Posts: 746
Likes: 1
From: salem or
Re: cracked spark plugs (SpinMonster)
You've got a blower. Right?
You're likely melting down your motor.
Do this: Install new plugs. Make a WOT run and then cut the engine. Pull the plugs and look for signs of heating. The electrode will be rounded and melted. Look at the white insulator tower and check for what looks like someone "shook pepper" on it. This are actually flakes of aluminum melting off the tops of your pistons and then being deposited on your plugs.
Get it to a tuner. Until then: Buy better gas and limit the length of your WOT passes under boost.
You're likely melting down your motor.
Do this: Install new plugs. Make a WOT run and then cut the engine. Pull the plugs and look for signs of heating. The electrode will be rounded and melted. Look at the white insulator tower and check for what looks like someone "shook pepper" on it. This are actually flakes of aluminum melting off the tops of your pistons and then being deposited on your plugs.
Get it to a tuner. Until then: Buy better gas and limit the length of your WOT passes under boost.
Melting Slicks
Joined: Jan 2003
Posts: 3,251
Likes: 4
Re: cracked spark plugs (LS1MASACRE)
the stock sparkplugs. I am having NGK TR6 plugs installed. I will check them soon too see what is happening. I will post any results I come up with. :skep:
$2 each and 30 minutes under the hood. Or replace the engine in the near future. I hope there has not been damage already.
Keep us posted.
Instructor
Joined: Oct 1999
Posts: 246
Likes: 0
From: Prescott Arizona
Re: cracked spark plugs (LS1MASACRE)
Sounds to me like your fuel pressure isn't being increased when you go into boost. You should have something like a Fuel Management Unit that isn't working. In short, as was said before, you're running way lean. Also, I bet the broken insulator they're talking about is not the outside of the plug but on the inside :eek: The scary thing is what did those little pieces of insulator do to the inside of the cylinders? :sad:
Chuck
Chuck
