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Spark plug problems
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05-01-2021, 02:19 AM
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PiccoLino
Join Date: Jan 2007
Location: Modena, ITALY
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Actually the porcelain isolator of all the plugs that I replaced was dark brown. Even after I set it leaner, the colour didn't change much but I personally can't see some extra fuel destroy the plug electrode. I mean that the plugs I removed didn't spark at all, it wasn't like brush them clean and fly again; to the point that at first I thought the ignition was defective.
I would rather blame a too high temperature at that vey point of the combustion chamber but I haven't seen any evident sign of overheating when I disassembled it (to replace the original gasket) either.
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