1 1970gsx Member Joined Mar 17, 2002 Jul 26, 2002 #1 I believe a spark plug should have a golden brown or tan color if running properly, but mine are of a rust color. What does this indicate if anything? I've checked spark plug analysis webs but couldn't find anything on rust colored plugs. TIA
I believe a spark plug should have a golden brown or tan color if running properly, but mine are of a rust color. What does this indicate if anything? I've checked spark plug analysis webs but couldn't find anything on rust colored plugs. TIA
Mr URL Member Joined May 24, 2001 Jul 26, 2002 #2 You haven't thrown in any octane boosters like 104+ have you?
