Question about 2001 KTM Exc-Racing E 400
Gooday...l was prepairing my 2001 model ktm 400 ex for Rec Reg, the only thing l did was take the tank off to fit the horn...when l put it back together it started blowing a heap of smoke, l took the tank back off incase l pinched a pipe or something and found the air filter full of oil, there was allso a heap of oil coming out the exsorst....it was running fine before l played with it...any thoughts Just a note on checking the oil , l dont know if its posible but it seemed as if it was mixed with petrol
Hi, Frank_sydow you're getting ready to go riding you pull out the dipstick to check your oil level and are greeted with the unmistakable smell of gasoline. What happens next depends on the following:
1. You have experienced this before and do not start the engine but do change your oil and filter leaving it 1 quart low until the engine reaches operating temperature then top off as necessary.
2. The amount of time your bike has been sitting since the last time the engine was running.
3. The amount of gas and contaminants in the tank.
4. The oil pump location, exterior or interior.
5. The condition of your petcock gasket/seal/diaphragm.
If your gas tank was low and you start the engine probably nothing you would notice but if your gas tank was full and you start your engine the oil/gas mixture can blow into your air filter, come streaming out of your crankcase breather hose, and launch your oil tank cap followed by a blast of oil. The mess can be minor or you need to call a Hazmat team for assistance. This will also happen if you overfill your oil tank.
Next is the how and why gas can get into your oil tank/system:
a. The vacuum petcock rubber/diaphragm fails, which allows gas to flow from the fuel tank through the petcock, through the vacuum line into the intake manifold, then into the combustion chamber, where it seeps past the piston rings and into the bottom end.
3. Nonvacuum petcocks that are not turned to the off position will patiently wait until contaminants from the gas tank build up in between the carburetor needle and seat breaking the seal thus inviting gas to enter the combustion chamber eventually finding it's way into the bottom end and the oil tank.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
is it possible to have gas in the oil on 4 stroke ATVConnection com ATV...
oil smells like gas
KTM 400 EXC RACING Owner Manual
Posted on May 19, 2017
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Posted on Jan 02, 2017
SOURCE: how much oil per gallon of gas
A fuel mix of 32 to 1 is the standard. That means 4 ounces of oil to one gallon of gas. Be sure to use two stroke engine oil in the gas. DO NOT use motor oil. 10w40 motor oil is for the gearbox.
A top rating would be nice. Thanks!
Posted on May 05, 2009
You can download an owner's manual for free here
Posted on May 23, 2009
good move will be have the recoil replaced and have the seals around the stator cleaned / investigated / repaired.
here is a good section from Supermoto Junkies on SX525
Posted on Jul 12, 2009
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