Strange spark plug deposits???
Thread Starter
Safety Car
Joined: Sep 2000
Posts: 3,604
Likes: 396
From: Austin, TX
Strange spark plug deposits???
All,
During my Kooks installed I noticed that one of my spark plugs was similar but yet very different than the rest. All them are were similar to #9 shown here http://www.dansmc.com/Spark_Plugs/Sp...s_catalog.html
but one of them had a huge growth of the brownish buildup on one side of the "L" shaped electrode (not sure of the official name). Anyone seen something like this before? Other than the "cancerous" buildup the color and surface texture etc were the same.
If anyone knows what could cause this I'm all
During my Kooks installed I noticed that one of my spark plugs was similar but yet very different than the rest. All them are were similar to #9 shown here http://www.dansmc.com/Spark_Plugs/Sp...s_catalog.html
but one of them had a huge growth of the brownish buildup on one side of the "L" shaped electrode (not sure of the official name). Anyone seen something like this before? Other than the "cancerous" buildup the color and surface texture etc were the same.
If anyone knows what could cause this I'm all
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
I gave this a lot of thought and the only thing that I could think of is maybe something got in that cylinder at one time, lodged on the electrode and turned into the BLOB of crap! Stick new plugs back in and monitor that cylinder at every oil change!
BC
BC
Team Owner
Joined: May 2001
Posts: 36,836
Likes: 244
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Originally Posted by PewterC5
Not sure of the number but its the second one from the rear on the passenger side.
and re-install the plug. It wouldn't hurt to check it again after a few hundred miles or so. HTHRobert
Thread Starter
Safety Car
Joined: Sep 2000
Posts: 3,604
Likes: 396
From: Austin, TX
Originally Posted by LoneStarFRC
That would be cylinder number 6. Since the buildup is only on one side of the side electrode, it is most likely that was the side facing the intake valve when the plug was installed. As stated, it may have been something that passed through that particular cylinder at one time or another. If everything else about the plug looks good, i.e. gap, color,not wet or sooty, etc, you can probably just clean off the offending "growth" and re-install the plug. It wouldn't hurt to check it again after a few hundred miles or so. HTH
Robert
and re-install the plug. It wouldn't hurt to check it again after a few hundred miles or so. HTHRobert
Yep, thats what I did...thanks.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski