High idle problem

[matt_s]

My Agility has a very funny problem. When I stop at a redilight for example and let go of the throttle, the idle is too high. I can feel the variator wanting to drive it forward. To get it down I have to give a little throttle and then let go, then I get the real idle rpm. Or I could wait 30s or so for it to come down, but sometimes it comes back up again.

Anyone had this problem? Could it indicate a problem with the auto choke? Besides this problem it runs fine, very easy to start and the top speed is as it should be, 45kmh, given it's not modified.

[blue]

sounds like you need to clean the throttle cable. and oil it up. or check to see if your hand grip is sticking.

[Cloud]

My 04 People 50 was acting exactly the same way.
It was the choke.

[matt_s]

Yep, the spark plug is all black so it's def getting a rich mixture. Any one tried a non original auto choke? The original one is so expensive...

[zombie]

I have a manual choke set up I got w/ my delorto. It will work w/ your stock carb as well.

[wordslinger]

I have a manual choke set up I got w/ my delorto


..i NEED that on my ppl..

[matt_s]

It will? I was told that the Dellorto manual choke won't fit the Kymco 4 stroke original carbs?

[matt_s]

Automatic choke replaced but it still runs rich when idle, I'm thinking it's the idle needle since I've checked everything else.

[art]

check some of zombie's posts on proper air idle setting,that is your problem most likely.

[matt_s]

I will do that, I saw in one of those posts that turning the pilot screw in (clockwise) will make it leaner. However, the service manual states that if it's too rich you should: "Mixture too rich (turn screw out)"

[art]

follow the directions of the post its the right way,I had the same problem and had to go closer to a 1/2 turn in to get it right all works great now on 4 different scoots i tuned by ear.