Originally Posted by
T.W.R
have a read its a KX 250 motu !
He knows a KX is a 2smoker. You have missed Motu’s subtle humour. 2 strokes may foul plugs, but if you ‘Fowl’ a plug then clearly some sort of farm yard shenanigans are up.
RH crank seals do have a limited life & yes when they leak they will foul plugs. On a 2004, hmm, I’d say outside chance unless it’s done a whole lot of miles.
250MX bikes are bitches for trail riding as they have too much top end to be thrashing them in the tight stuff so you use that lovely bottom end. Problem is this is a dirty area of combustion as the pipe is out of tuned rev range so efficiency is low. To make it worse factories jet the bikes safe (rich), consequently plugs get fouled.
First off the bike will be too rich if the filter isn’t cleaned. But then it is worth playing with size smaller pilotjet as a start to see if that cleans up the small throttle openings as I bet it’s a bit “burbley” there.
Don't you look at my accountant.
He's the only one I've got.
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