OK my daughter wanted this yamati factor 150cc atv. Witch I wanted to get a name brand but what she wanted it. It runs good for a Chinese quad only problem is on top of the cylinder head there's a hose that's about 6 inches long and when the quad is running it shoots oil out. Enough to drain the oil res. My thoughts were get a whole top end kit but I don't know if it will fix it. Please help I can't ride my banshee cause she wants to ride hers. Thanks

 

Top of the head is usually for a crank case vent hose on some models. Should go to the air box on most machines if this is the case,but shouldn't be shooting out oil unless the engine was over filled.

 

It's not over filled it drains the oil right out of the quad to the point where theirs none on the dip stick

 

Sounds like you have some sort of case pressure issue, check your vent lines to make sure none are plugged?

can you show us pictures of the engine and hose in quesion

 

okay he sent me some pics




what are we looking at here I see the top of the cams and I see a clear hose in the second pic
Is that the hose puking the oil?

 

That looks like a GY6 motor and the pipe from the rocker cover is at the top when the cover is on, right? If so, it is a breather and the cam cover shouldn't get full enough to blow oil out of it. There probably will be another breather from the crankcase, which may be blocked, as that one is too small to take a single cylinder engine's breathing, or you are getting a lot of "blow by" from worn piston rings and cylinder.

 

also fyi you said its blowing out enough oil to be just below the dipstick
does it stop blowing out oil then? Maybe it is overfull and the dipstick is incorrect?

Check all vents!! If a case cannot vent as temp rises and fluid expands it will find another way out as pressure builds