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raptor_rider

2001 Yamaha Raptor 660 Idle Problems

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i have a 2001 raptor 660 and whenever im riding it and i let off of the gas it will sputter. it also does it after im riding it a while and i let it idle it will sputter every once in a while. any ideas wheat the problem may be.

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no no no, check your jets. what modifications do you have? might want to rejet properly

altho i found your problem "raptor"

dooh ho ho ho!

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there isnt any modifications really. only thing i can think of is when i had it worked on bout 6 months ago the mechanic put a 1.5 inch hole in the top of my filter box.

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it's in your carb then. i would rejet, your quad is sucking more air. might not sound like a lot but anything affects it really. dont you have a air/fuel mix screw? yeah tinker with that a bit too!

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i dont think he has to rejet if he didnt do any mods their would be no need...it could be as simple as u needing to clean out ur carb..

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alright y would he have to rejet if he didnt do any mods?? it doesnt happen out of no were.. the only way i could think if he went higher in elevation

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if u order a dyno jet kit it will give u all the directions u need to install it.. or any jet kit will give u directions i think

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Sounds like you just don't have enough fuel in the carb bowl at low idle. You said you cleaned the carb, did you take it apart and look at the float pins and check for free flow movement?

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alright y would he have to rejet if he didnt do any mods?? it doesnt happen out of no were.. the only way i could think if he went higher in elevation

He said that there was a hole added to the airbox lid, that would be a good reason to jet a little richer.

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yea i was thinking that but that was 6 months ago and now the problem started so thats why i didnt really pay attention to it

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I would start with the The jet needle.... its most effective between 1/4 through 3/4 throttle and wont cost you a dime if works....Also The air screw is most effective between idle through 1/8 throttle......that also will not cost you anything....Dont do them both at the same time though....Make a Change and Test it....If that doesnt work...Move to the Second Operation and Test.....Also,,,,Whenever I drill Holes,,,,I Sneak a pair of the Wifes Panty Hose thingies and Cover my lid.....Kinda like a Pre Filter....:wink:

Oh BTW......Make DAMN SURE you are Checking your PLUG!!!!!!!

.

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so i covered up the whole on the air box just to see if it would make a difference and i rode it for bout an hour and it seemed to fix the problem. it still idles a little rough and every once in a while when its idling it will die unless i turn up the idle a little bit. i dont know if thats just becasue its an 01 and its got some miles on it. what do you guys think

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