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That is the burnt two stroke oil. it is pretty normal
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∙ 13y ago
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Why does your two stroke spit oil out the exhaust?
Oil in the exhaust is part of the two stroke design but if you have too much, you should check the fuel/oil mixture or the oil injector settings.
Will the exhaust from a 1985 yz 490 fit on a 1984 yz 490?
Yes it will. The 1984 yz490 and the 1985 yz490 are identical bikes other than the front disc brakes.
What causes exhaust to spit oil?
Cracked block, worn-out rings, hole in a piston, valve-stem seals, and several other less expensive things if you're lucky.
Torque specs for head on 1980 Yamaha YZ490?
there is no such bike yz490 didn't start till 1982 and went on to 1990 before this it was a 465 ....
What would cause a Yamaha Banshee to spit gas out of exhaust?
You have a problem with your carburator. Have it looked at
Why does a dirt bike spit oil?
Its cool
Can exhaust manifold leak cause you to burn oil?
can exhaust manifold leak cause you to burn oil
What happens if a dog eats dirt with oil in it?
it will spit it out.
Can burning oil clogged exhaust cause smoke?
yes burning oil smokes if the exhaust is clogged the motor will not run so if you suspect a lot of oil in the exhaust the engine needs serviced
What year is a Yamaha yz490 with the vin 5x6-004432?
1982
How fast is a yz490?
usually about 90 or 95 with stock gearing
What is the best way to stop blue smoke from exhaust?
if you have blue smoke coming into the exhaust that means your piston rings are bad and are letting oil into your combustion chamber and then causing the oil to be burned with your air fuel mixture and that's why your exhaust is blue from having that burnt oil dumped out of the exhaust valve and out the exhaust
