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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
ancient IT250: beat off moths, now coughs
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[QUOTE="COMBEN, post: 21232, member: 16671"] El hombre, que tal, no tan bueno con su Yamaha es verdad? well I have a go! Could be the crank seals have hardened and you are sucking tranny oil into the engine and burning it so you get the blue smoke, but if you are only burning half the inlet charge I think you may get a similar haze. If your inlet boot is a little poorly try some 'EasiStart' the sort of alchocol in a spray can that makes diesels start a little better when its cold...spray all around the inlet tract, if the engine speeds up you need a new inlet boot. Are you really sure you have all the jets clear...these new clean gasoline fuels don't seem to last as long...the lighter hydrocarbons leave the fuel so much quicker and leave some right nasty gummy liquid behind...just try throwing some fuel on the floor, it don't evaporate so much like the old days...another thought try running with the fuel cap loose..any blockage will create a vaccum if it's marginal you may see the same symtoms....oh and does is this worse when the engine is warm..could be the coil or lead breaking down....is there a fuel filter in the petrol fuel tap..could be gummed up.... good luck! Cheers Richard, rode today but still have the flu'...wish I hadn't! [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
ancient IT250: beat off moths, now coughs
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