how long til plug in misfiring cyl. fouls?

snidehockey

New Member
Jun 18, 2007
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Orlando, Fl
I had a misfire on cyl 3 yesterday because the cop wasnt bolted down...It ran like that for like 10 minutes...one time up to 70mph before the SES light started blinking then I pulled over and found the problem....

well I tightened it down and it ran great...except now today its running like it was when it was misfiring but no ses yet...Think the plug fouled and took a little bit to deteriorate?