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Scooters - 50cc => Agility 50 => Topic started by: wordslinger on September 15, 2009, 11:22:43 AM

Title: ..carburetor tuning and lessons learned...
Post by: wordslinger on September 15, 2009, 11:22:43 AM

...carburetor tuning is painstaking, time consuming...

..don't cut corners..learn all you can about what you're going to do, BEFORE you start...

 :o

..PLUG CHOPS will be the key to success!!..





Title: Re: ..carburetor tuning and lessons learned...
Post by: franx93 on September 15, 2009, 12:23:19 PM
what are plug chops?
Title: Re: ..carburetor tuning and lessons learned...
Post by: wordslinger on September 15, 2009, 12:42:18 PM
...the link below is to an awesome carburetor tuning site...


http://justkdx.dirtrider.net/carbtuning.html (http://justkdx.dirtrider.net/carbtuning.html)
Title: Re: ..carburetor tuning and lessons learned...
Post by: wordslinger on September 15, 2009, 01:18:21 PM
what are plug chops?

..plug chops are performed when tuning a carburetor..

..their purpose is to give you an indication of what your fuel / air ratio is, at any given throttle position..

..the reason the are so important to perform is, you could be running a "lean" mix..which could do some SERIOUS damage to your engine...

..NEVER RUN LEAN!!

..btw, Tutto..I read one of your posts where you said you had white smoke from your exhaust....

..what I found to be true, is that if you have a "rich" mixture, the smoke will be black...

peace
Title: Re: ..carburetor tuning and lessons learned...
Post by: Shaka on September 15, 2009, 03:25:45 PM
...carburetor tuning is painstaking, time consuming...

..don't cut corners..learn all you can about what you're going to do, BEFORE you start...

 :o

..PLUG CHOPS will be the key to success!!..







I second that! ;D
Title: Re: ..carburetor tuning and lessons learned...
Post by: zombie on September 15, 2009, 05:02:38 PM
Hey guys, I didn't see the white smoke post, but that would usually indicate coolant getting to the combustion chamber.
Title: Re: ..carburetor tuning and lessons learned...
Post by: wordslinger on September 15, 2009, 05:04:24 PM
Hey guys, I didn't see the white smoke post, but that would usually indicate coolant getting to the combustion chamber.

..I think Tutto's smoke post was in the K&N thread...

..the Agility 50 is air-cooled...
Title: Re: ..carburetor tuning and lessons learned...
Post by: scoot1234 on September 15, 2009, 05:21:43 PM
If the smoke is white, I was always taught oil was leaking around the ring burning with the fuel. Black smoke is lean. 8)
Title: Re: ..carburetor tuning and lessons learned...
Post by: wordslinger on September 15, 2009, 06:16:37 PM
..okay, let's all debate smoke coloring...I was running very rich...I had black smoke from my exhaust...decreased my jet size...the black smoke went away.....

..NEXT!!

 ;D :o
Title: Re: ..carburetor tuning and lessons learned...
Post by: Shaka on September 15, 2009, 08:07:14 PM
I have a 2-stroke, always blows a little blue smoke.  If it doesn't I have issues! ;D
Title: Re: ..carburetor tuning and lessons learned...
Post by: wordslinger on September 15, 2009, 08:13:29 PM
I have a 2-stroke, always blows a little blue smoke.  If it doesn't I have issues! ;D

..that was always my knowledge..

.. Black = Rich..
....Blue = Oil..2 strokes are a fine example..
..White = Lean..or other issues...

Title: Re: ..carburetor tuning and lessons learned...
Post by: Shaka on September 15, 2009, 09:27:14 PM
Slinger- I would agree!
Title: Re: ..carburetor tuning and lessons learned...
Post by: scoot1234 on September 15, 2009, 10:41:49 PM
here's a good smoke session:www.tritonclass.org/mir/engsmoke.html www.tritonclass.org/mir/engsmoke.html (http://www.tritonclass.org/mir/engsmoke.html)

source:askjeeves.com
Title: Re: ..carburetor tuning and lessons learned...
Post by: sticlistul on April 21, 2010, 08:13:21 PM
I've read in link from wordslinger a thing that I dont understand in my language ... maybe you could say in other way :-s :

"At the end of your full throttle run simultaneously push the kill button, chop the throttle and pull in the clutch."

what kill button ?

he refers at brake ?
Title: Re: ..carburetor tuning and lessons learned...
Post by: Shaka on April 21, 2010, 10:24:28 PM
I think that is in reference to doing a plug chop.  You want to push the engine shut off switch while maintaining the throttle position until the engine completely shuts off. 
Title: Re: ..carburetor tuning and lessons learned...
Post by: sticlistul on April 22, 2010, 06:02:25 AM
so after I stop the engine he say to don't pull the throtle cable again until I remove the spark plug ?
Title: Re: ..carburetor tuning and lessons learned...
Post by: zombie on April 22, 2010, 06:41:49 AM
Hold the throttle where it is until the engine is shut off. That way the plug will show what is happening at that throttle setting.
Title: Re: ..carburetor tuning and lessons learned...
Post by: Shaka on April 22, 2010, 11:18:12 PM
For example, if you are running a wide open throttle plug chop, don't release the throttle until after the engine stops completely.
Title: Re: ..carburetor tuning and lessons learned...
Post by: wordslinger on April 24, 2010, 02:41:41 PM
...do you guys do your WOT chops while riding?

..or on th stand?

Title: Re: ..carburetor tuning and lessons learned...
Post by: Kimcofan on April 24, 2010, 02:50:28 PM
Been busy hows everyone, looks like you guys have it handled,  I agree with the carb tuning it is awful still tweaking mine, but i am running more than 50 now on the flats still need to figure out an exact speed but keeping up with the cars passing with ease as well.  I am loving it, up hill is still a battle but not nearly as bad as it was, but I will say this I am blowing all the scoots out of the water, I have had so many people asking me what the hell I had under her!!!
Title: Re: ..carburetor tuning and lessons learned...
Post by: sidthesloth on April 24, 2010, 02:54:07 PM
You're back, havent heard from you for a while, good to hear your scoot is going well.
Title: Re: ..carburetor tuning and lessons learned...
Post by: wordslinger on April 24, 2010, 02:56:16 PM
Been busy hows everyone, looks like you guys have it handled,  I agree with the carb tuning it is awful still tweaking mine, but i am running more than 50 now on the flats still need to figure out an exact speed but keeping up with the cars passing with ease as well.  I am loving it, up hill is still a battle but not nearly as bad as it was, but I will say this I am blowing all the scoots out of the water, I have had so many people asking me what the hell I had under her!!!

..ain't that a blast?!

..dude, did you ever get that pipe?
Title: Re: ..carburetor tuning and lessons learned...
Post by: zombie on April 24, 2010, 04:30:07 PM
...do you guys do your WOT chops while riding?

..or on th stand? Riding! The load on the engine makes all the difference.
Title: Re: ..carburetor tuning and lessons learned...
Post by: wordslinger on April 24, 2010, 04:53:51 PM
..okay, that's what I thought...and i don't like throttling wide open on the stand for more than a second anyway...
Title: Re: ..carburetor tuning and lessons learned...
Post by: Shaka on April 26, 2010, 01:47:48 AM
...do you guys do your WOT chops while riding?

..or on th stand?



As Zombie said, While riding!  Gotta have load on the engine!
Title: Re: ..carburetor tuning and lessons learned...
Post by: Kimcofan on April 26, 2010, 11:00:41 PM
Didnt get the pipe, still working on the carb though, I keep messing with the jets, I am running rich now when i hit close to my top end my scoot slows me down still havent raised the needle yet just been enjoying the ride.  I really hope to get this thing right but havent had much time to work on it I will keep updating, want to take her on a long trip, but want her running right first
Title: Re: ..carburetor tuning and lessons learned...
Post by: wordslinger on April 28, 2010, 03:01:52 PM
Didnt get the pipe, still working on the carb though, I keep messing with the jets, I am running rich now when i hit close to my top end my scoot slows me down still havent raised the needle yet just been enjoying the ride.  I really hope to get this thing right but havent had much time to work on it I will keep updating, want to take her on a long trip, but want her running right first

...dn't know about that needle raising...i've tried it, but have always gotten better all-around response with it in the stock position...

..with a lil help from my friends, i've been able to tune it out with just the main and slow jets...

..but you do have a kit on dat bitch, so.......  :-\