well im working on my friends grizzly 600. its been sitting for a while so im cleaning it up and stuff. well it has a peculiar problem.... ok so there is a tube that connects from the bottom of the motor and goes back up to the intake. ok well when it idles and you rev it it shoots like gas/oil mixture back into the intake through the tube, i think its something really bad. hopefully you guys can help me out

 

One of my buddies has a 600 and for him has been nothing but trouble. He had the same problem with the oil in the intake.

 

if it's the tube I think you're talking about... It's typically used to bleed off excess moisture/steam that's inside the engine. (like the water that seperates from your oil after it's been sitting for a while) When you're in off camber situations there are instances where a little oil can make it's way to the airbox... but it's usually minimal... It almost sounds like you have too much oil in the bike... Try changing it, and verify exactly how much is suppose to go back in... See if that fixes your problem...

 

alright. ill check the oil level and possibly change it. ill let yall know if that fixes the problem

 

verdict?