[The Big Gulp] - ATV Riders Forums - Honda, Yamaha, Suzuki, Kawasaki, Polaris, CanAm, Arctic Cat, Kymco ATVs

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The Big Gulp
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Posted by: Quadjunkie

This is a repeated question about how to eliminate the 'gulp' of air that takes place when you tag the throttle from idle. Does anyone know how to remedy this? Does the 450r carb do the same thing? Any info on the concept or solution would be greatly appreciated.

Posted by: mod440ex

if i am thinking of what you are talking about, that is the sound of power. the more air you get in the more power you have. what kind of airfilter are you using? do you have your airbox lid on or off?

Posted by: mod440ex

well i answered my own question after reading the sig. the sound you are hearing is from having the k&n on and not having the lid on. plus having thr choke removed adds extra air. and to maybe help you out with the other thread, it sound like your might be running rich. try adjusting the idle air screw.

Posted by: Pipeless416

quote:
Originally posted by mod440ex
well i answered my own question after reading the sig. the sound you are hearing is from having the k&n on and not having the lid on. plus having thr choke removed adds extra air. and to maybe help you out with the other thread, it sound like your might be running rich. try adjusting the idle air screw.

no.. i think hes talking about when he stabs the throttle it kinda dies out and then picks up the RPMs. it could be a few things. one simple problem could be too low of an idle. beyond that its jetting.

Posted by: mod440ex

oh i got ya, yeah i would agree check your idle then if that doesnt fix it then go with some jetting. they have a really good explanation under the "articles"section on what chnges what on the carb. you might check that out

Posted by: Quadjunkie

Yes I was talking about the die out that happens when you stab the throttle. It's the momentary airy sounding miss, then it picks up. I got it to clean up some after I cleaned out my accelerator pump. Thanks for the replies.

Does anyone know if the 450r carb runs any smoother?

Posted by: mod440ex

with the mods in your sig i wouldnt worry about it until you get up to at least a 440. you could have the same problem with it. i would start tweaking with the jets and see what happens.

Posted by: gncc025

i noticed when took the choke off of mine it seemed to help the delay some. its still there but just not as severe.

Posted by: GOTFEAR

if your motor is stock put a advance key to bump up your timing this will help out