I'm wondering what the problem is with my Raptor. The Intake boots blew off, so I got the updated ones, and I can't get them to stay on too well either. Wondering if it's the jetting or what. It doesn't start worth crap when it's cold either. I have a White Bro's pipe on it too. Thought that might help. Thanks

 

Try a Dyno-jet kit stage 2 or richen the air fuel mixture? they say sometimes the carbs blow off because they were comming from the factory alittle lean. You are suppose to let it warm up alot so it wont back fire.

 

I have a dyno jet kit in it and I don't know if it's the right size or not. When it's cold it will not start, but I can coast start it and it starts right up.

 

I've had no problems with my boots, so I can't help you with the best attachment method. But I do recall seeing it addressed in previous threads. Best to do a search on carb, boots, etc.

But I can tell you that getting the technical staff at dynojet to prescribe the correct jets for your particular setup is critical to getting rid of backfire, hesitation, and low power.

 

Check your idle speed this is a normal cause for carb boots popping off. If its to low when you let of the gas for a second at low rpm then get back on it it starts to stall and backfires through the carbs. The raptor is et lean at an idle from the factory and there is a warranty fix with new specs on this with the new boots.
The hard start is most likely caused by the intake valves being too tight. This is another common problem, and probably part the reason your carb boots are blowing off. Good luck, hope this helps.

 

Knock on wood. (knock knock)

Ive had none of these problems. They must have put my bike together well. [img]i/expressions/face-icon-small-smile.gif[/img] 10 months old and sweet, very sweet. This weekend will be my first ride with the Alba pipe kit. Can't wait. Good luck with your problem.

 

Hey thanks for the advice. It sounds like that will help. Is there any special setting to set the valves at? Thanks

 

Intakes 0.10-0.15mm or 0.0039-0.0059 inch
Exaughst 0.15-0.20mm or 0.0059-0.0079 inch

Its best to have the service manual at hand because you need to set the top dead center etc and to obtain that you need to have certain marks on the rotor aligned with the crank case cover etc. I paid 59.00 bucks for mine i believe. Worth every penny. Good luck

 

Some 27.5 pilot jets might help as well.

 

I got a factory service manual too. It's better than nothing but I wish Haynes or Clymer would hurry & put out A raptor manual[img]i/expressions/face-icon-small-disgusted.gif[/img]