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Truck Parts

Fall is here

Hambone working on his Chevy

The last of the shows will soon be only digital pictures and fond memories. If you are getting your Bolt ready for some last cruises, or just thinking about putting her up for winter, be sure to check out what parts you need from American Classic Truck Parts. They still offer a 10% discount on parts in stock to Stovebolters. Please add your Stovebolt screen name and number in the comments at the end -- no special codes required.

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Old Truck Calendars
2016 Calendars!
12 months of GMC Stovebolts

The calendars from last year are available for 2016. We will be starting from scratch soon. If you want one just like one from last year, you may want to check it out soon.

Check for details!

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#33424 - Sat Jun 28 2003 01:17 AM What causes carbon build-up on spark plugs?
blaiben Offline
Shop Shark
Registered: Mon Feb 19 2001 12:00 PM
Posts: 277
Loc: Leadwood, MO USA
Hello -

I put new spark plugs in my '51 (216) about 2 years ago. I'm ashamed to say that it has only been driven about 20 miles in that 2 year period. (I'll do better!) I have been working on it lately, and I feel that the motor is missing somewhat. I pulled all the plugs, and most are really covered with black carbon, to the point that I don't think they all are firing. I have ordered new plugs and will replace them, but, was just wondering what causes that black buildup, especially considering it has so little running time on it since they were put in new.

Bernard Laiben
1951 3100 Chevy Deluxe Pick-up (original with 73,000 miles on a "straight Six" 216)
#33425 - Sat Jun 28 2003 07:29 AM Re: What causes carbon build-up on spark plugs?
tclederman Offline
Registered: Tue Sep 18 2001 12:00 PM
Posts: 21443
Loc: Castleton-on-Hudson, NY
#33426 - Sat Jun 28 2003 06:00 PM Re: What causes carbon build-up on spark plugs?
racecarldad Offline
Registered: Fri Dec 15 2000 12:00 PM
Posts: 137
Loc: norton Kansas USA
Black carbon on the spark plugs is usually caused by a very rich mixture of fuel. If this isn't cured it will wash down the cyl. walls and cause it to go to using oil.
kdot em3

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