I have a raptor with a pro-flo no lid, and i just installed a curtis sparks full exhaust with jets at 162.5, 167.5, and 27.5 pilots and its smoking whitish/blue what could be the problem?

 

What dose it smell like. I am guessing it is rich. Do a plug chop. Replace the spark plug and runn it up and down the road or trail at 3/4 throttle for about 2 min. If it is black jet down.

Wort case is you got it too hot and the oil ring on the piston seized up. That mean you have to take it all apart.

 

What you may have is a cylinder head with too much clearance between the valve stems and guides!

I have seen the problem on 5 660 heads recently. The chamber is coated with oil and the riders complain of smoke. Actually, the smoke seems to get worse with a free flowing exhaust and jetting that is right on or slightly rich.

Try to get Yamaha to warranty a new head!!!

 

I didnt change my plug when i rejetted could that be it?

 

no, the plug would not cause your problem. I would bet $100 that it is the guide clearance problem

 

aside from the oil smoke problem, try using the stock pilots there is no need to go bigger! You may want to go one step down on the jets.

 

Also i just noticed today that both of carbs are popped of and ripped but i dont think that could be it