ok my friend changed the oil in his 400ex and it has fouled 2 spark plugs but ran perfect befor he changed the oil so he checked his oil and it was over the high level would this cause his bike to smoke a tiny pit at start and foul his plug ????
How much did he put in it? It would have to be WAY to full to foul a plug.
like i think it was 3 quarts or sum thing like that i know its like a inch over the line where it says top
Did you check the fitzer valve? It sounds like the fitzer valve, you can fix it but you're gonna nee the following...
"some pliers, and a set of 30 weight ball bearings (it's all ball bearing nowadays) And I'm gonna' need about 10 quarts of antifreeze, preferably Prestone. No, make that Quaker State."
- Fletch
3 quarts of oil!!!!!!!!!!!!!!!!! thats way too much. my 300ex only takes 1.6 quarts. that would make it smoke i think but dont no bout the spark plug.