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Old 06-19-2024, 11:18 PM   #16
Thumper   Thumper is offline
 
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Join Date: Feb 2021
Location: Kansas City
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Prodigit is joking. The dark stuff on the threads of the plug might be oil, but you read a plug at the electrode and porcelain insulator, NOT the threads. And that part of the plug looks pretty good. No reason to clean it with a wire brush! There is nothing there.

Your M is low miles. Over time the porcelain will discolor to off white.

But if it gets a chaulky residue, too lean. If it gets sooty, too rich. Yours is neither.

But I think that's a cheap Torch plug. Get a good plug in there. NGK DR8EA (7162) is a good one.
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Last edited by Thumper; 06-20-2024 at 11:37 AM.
 
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Old 06-20-2024, 11:45 AM   #17
NYCDiesel   NYCDiesel is offline
 
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My man, appreciate your input as always. Yeah when I was looking at all the pictures online my electrode looked like it was in ideal condition



I just ordered the NGK plug, much thanks my guy.


 
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Old 06-20-2024, 09:44 PM   #18
ProDigit   ProDigit is offline
 
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The thread occasionally can get discoloration on it as well. It all depends on how deep these generic plugs can screw into the block, with a piece of the threaded section entering the combustion chamber.

Either way, brushing it off gets you a newly looking plug, that'll be easier to read.
I myself just listen to the exhaust tone, and smell if a bike is running rich or lean.

Last time I pulled my plug, it was golden brown, with a slightly darker brown on the bottom than on the top .
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