blowing smoke please help

A

animal's

Member

May 15, 2007

5

0

• May 25, 2007

• #1

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

 

T

thorman75

"Team Army"

Member

Dec 9, 1999

673

0

• May 26, 2007

• #2

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.

 

S

sharky_101

Member

Mar 14, 2007

25

0

• May 26, 2007

• #3

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

 

B

bdtoady22

Member

May 18, 2007

11

0

• May 26, 2007

• #4

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

 

A

animal's

Member

May 15, 2007

5

0

• May 26, 2007

• Thread starter
• #5

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

 

A

animal's

Member

May 15, 2007

5

0

• May 26, 2007

• Thread starter
• #6

thanks I will try that. Gregg

 

C

Chili

Lifetime Sponsor - Photog Moderator

Apr 9, 2002

8,062

15

• May 26, 2007

• #7

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

 

R

Red Ryder

Member

Mar 14, 2007

104

0

• May 26, 2007

• #8

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.

 

A

animal's

Member

May 15, 2007

5

0

• May 27, 2007

• Thread starter
• #9

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.