My Raptor smokes when I start it. After I run it for a little bit it quits. I thought it would be the valve seals, but could be the rings or something else. Let me know what u think. Thanks

 

Have you done any mods?

 

Smith31,
Are you the original owner and how many hours approx. is on the engine and how often was the oil changed?
CHET the wartless wonder

 

Sounds like your choke is on when this is happening and it is cold outside.

My Raptor and both 400exs do the same thing (live a little south of you in Maryland).

/NotuRaptor

 

[img]i/expressions/face-icon-small-happy.gif[/img] Your not suposed to use pre mix in a four stroke!!!![img]i/expressions/face-icon-small-happy.gif[/img]But seriously do a leak down it may be time for rings. Then you can go ahead & put that sparks 11:1 piston in!

 

yes I'm the original owner, and I have approx 2-3 hundred hours. I change the oil around every 8 tanks of gas.

 

I have it re-jetted, and I have a White Bro's Pipe, and a UNI foam air filter.

 

it could be the rings never properly seated,this could be due to improper break-in...just an opinion

 

Any idea how many hours it takes you to go through 8 tanks? If I rember it takes me 3 to 4 hours on a tank but so far I've only been doing trail riding. 24 to 32 hrs seem a bit long to go but mabey I'm over doing it by changing mine every 10 to 15 hrs but better safe than sorry.

 

What color of smoke?