blowing smoke please help

[animal's]

380 blowing lots of smoke help!

Hello I have a 1999 ktm mxc 380 and it is blowing lots of smoke enough that it is dripping out of the tail pipe. I have just rebuilt the top end with a sleeve,piston, etc.... I was told that it could be the crank shaft seals {sucking oil from the trans ? } any help would be greatly appreciated as this is my first ktm. thanks Gregg

 

[thorman75]

if it is the trans side crank seal your trans fluid level will drop. Fill it up, go ride, if it's dropping theres your problem.

 

[sharky_101]

does it smell like tranny oil (a plasticy smell) or 2-stroke oil smell? what colour is the smoke?

 

[bdtoady22]

bdtoady22

i ride a 94 yz 125 and the crank seal was bad in it. the easiest way to tell is watch your tranny oil level. in 2 hours of riding i would burn almost half of it. idling down a hill and turn and power up it would smoke like a freight train. i would say thats your problem

 

[animal's]

smokey

it blows a lot of smoke like you said "like a freight train" the oil that is leaking is black.also when I rev it, it doesnt have full power. thanks so much for the replys I am kinda new at this stuff. Gregg

 

[animal's]

thanks I will try that. Gregg

 

[Chili]

I've merged this thread and the one you posted in the KTM forum, Please do not post the same thread in multiple forums.

 

[Red Ryder]

I would say you for sure have some leaking seals. Seeing as it has a lack of power, lots of smoke and dripping black oil/spooge out the pipe.

 

[animal's]

sorry about multible posting didn't know exactly were to put it. anyway I think it is the seal in the trans because the level is low and I have only driven it around the yard two times. thanks for the info and I will post when I repace the seal.