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noboD · 04-15-2018, 05:02 PM

I can remember reading several experts saying sand blasting causes a rough surface on the porcelain which causes more carbon to stick. Besides when the electrodes are worn the plugs need to be thrown away.

04-15-2018, 05:02 PM	#13
noboD Senior Member Join Date: May 2010 Posts: 319	Re: spark plug cleaning I can remember reading several experts saying sand blasting causes a rough surface on the porcelain which causes more carbon to stick. Besides when the electrodes are worn the plugs need to be thrown away.