If your KTM 250SX is blowing transmission oil out of the vent hose, it could be due to overfilling the transmission or a malfunctioning oil seal, which allows pressure to build up inside the transmission. Additionally, a clogged vent hose can prevent proper airflow, leading to excess pressure and oil being forced out. Another possibility is that the gearbox could be experiencing excessive wear or damage, causing increased pressure and oil leakage. Regular maintenance and checks can help identify and resolve these issues.
There is no transmission vacuum hose. That is a vent hose.
its a vent hose
If a Polaris Scrambler transmission vent line is blowing out transmission fluid the fluid may have been overfilled. Putting the transmission fluid in the wrong plug can also cause this.
It's just a vent hose. It doesn't connect to anything other than the transmission.
that is a vent hose. it hangs freely. does not connect to anything.
If it's a vent hose it doesn't go anywhere.
To vent pressure in the crankcase. Really its the pcv but they work to gether. Prevents oil blowing out seals.
I have a KTM 300exc and when I had this problem my water pump seal had stARTED LEAKING CREATING PRESSURE IN CRANKCASE AND ADDING WATER TO OIL pushing oil out the vent. might check it... Bruce San Jose Calif
The vent hose is for either the transfer case breather or the transmission breather. A light amount of oil residue is normal. If there is a lot of fluid coming out of the hose then it is most likely caused from the transmission getting too hot.
is the transmission operating correctly? if it is , that hose is most likely a vent tube,
It depends on the year, for Cougars made from '99 till '02, the Automatic Transmission Breather hose is located on the drivers side of the engine, underneath the battery tray.
There is a redesigned transmission vent that should fix this problem.