Sounds like it could be a problem. Also, if it is dentonation, you should hear what's called knocking or pinging. You will know what it is.Chili said:My bet is detonation. What jetting are you running? We had detonation issues with our 03 that required Octane booster or some race gas to clear up.
If this is the problem, it should be leaving small marks every time it does it. If you have any reason that you would be taking the engine apart any time soon, check it out.TimberPig said:If the ground electrode is breaking off or being worn off, there are normally only 2 causes. Mechanical damage due to physical contact (piston hitting the plug, normally due to the wrong plug)
MOTOX888 said:Ok, i am talking about the ground strap that bends up over the electrode, and the spark shoots up to it from the electrode. On the end of the ground strap it is chewed up. The electrode looks perfect. Never seen anything like it!
There are two possibilities: Oil fouling or running too rich...Way too rich.klunk yed said:could anyone help went out on my rm 250 last sunday within 2hrs went through 4 spark plugs. plugs endedup black and wet through WHY is my mix wrong or what
klunk yed said:could anyone help went out on my rm 250 last sunday within 2hrs went through 4 spark plugs. plugs endedup black and wet through WHY is my mix wrong or what
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