Oil, Fuel, Carbon Fouled Plug??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

savatreatabvr · 11-24-2011, 06:50 PM

A month or so ago I posted a question about my BBC spark plug issues and got some great responses but check this out, my truck is running better than ever but the plug fouling has gotten worse! 1st pic is the original plug with about 2000 miles on it, I cleaned it and the BBC purred like a kitten! 2nd & 3rd pics are the same plug with 2000 more miles! What the heck causes spark plugs to foul like this?

donut · 11-24-2011, 10:53 PM

I only see 1 pic, but my first reaction is valve guides and/or seals.

I'm sure some more knowledgeable folks will chime in. I personally haven't run a bbc in 25yrs. I also didn't follow your plug thread very closely.

savatreatabvr · 11-25-2011, 08:06 PM

I started a new thread called "riddle me this mechanic man" because my pics on this thread vanished in cyberspace!

Quote:

Originally Posted by donut

I only see 1 pic, but my first reaction is valve guides and/or seals.

I'm sure some more knowledgeable folks will chime in. I personally haven't run a bbc in 25yrs. I also didn't follow your plug thread very closely.

**old Rusty C10** · 11-25-2011, 08:28 PM

that particular cylinder is leaking somewhere causing the plug to foul...

11-24-2011, 06:50 PM	#1
savatreatabvr Registered User Join Date: Oct 2011 Location: phoenix, az Posts: 508	Oil, Fuel, Carbon Fouled Plug??? A month or so ago I posted a question about my BBC spark plug issues and got some great responses but check this out, my truck is running better than ever but the plug fouling has gotten worse! 1st pic is the original plug with about 2000 miles on it, I cleaned it and the BBC purred like a kitten! 2nd & 3rd pics are the same plug with 2000 more miles! What the heck causes spark plugs to foul like this?

11-24-2011, 10:53 PM	#2
donut Registered User Join Date: Aug 2009 Location: S.C. Posts: 1,593	Re: Oil, Fuel, Carbon Fouled Plug??? I only see 1 pic, but my first reaction is valve guides and/or seals. I'm sure some more knowledgeable folks will chime in. I personally haven't run a bbc in 25yrs. I also didn't follow your plug thread very closely. __________________ '86 C-30 dually, 454/tbh400 '73 K-20 350/350/205 (sold ) I'm kinda like duct tape- no real purpose, but handy to have around.

11-25-2011, 08:28 PM	#4
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,284	Re: Oil, Fuel, Carbon Fouled Plug??? that particular cylinder is leaking somewhere causing the plug to foul... __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!



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