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General Category >> Rubber Side Down! >> Carb Tuning: Garbly sounds
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Message started by Coaxial on 05/29/14 at 06:53:50

Title: Carb Tuning: Garbly sounds
Post by Coaxial on 05/29/14 at 06:53:50

Hey guys I am having some issues tuning my bike correctly.

Currently when I roll off on the throttle the bike slows down and makes garbly farting noises sometimes the occasional pop.

I am using 145 / 45 / 1.5x turn with one metal washer spacer.
I am 350 ft altitude close to a Lake.
I am using a K&N Air filter
I am using a Jardine Rumbler Exhaust.

I checked the sparkplug and it is dark and sooty.

Any thoughts?

Title: Re: Carb Tuning: Garbly sounds
Post by Dave on 05/29/14 at 07:15:24

You might try adding an additional washer to the needle. It is normal to use 3, 2 sometimes works to correct a lean mid range. I have not ever heard of anyone running just a single washer.

Title: Re: Carb Tuning: Garbly sounds
Post by Serowbot on 05/29/14 at 07:20:45

I like the garbly, farting, noises.... gives it character...

With your set-up,... your jetting sounds lean...
Try a 152.5/50# combo...

Title: Re: Carb Tuning: Garbly sounds
Post by Coaxial on 05/29/14 at 07:33:43

hmmm lean? last time i had a higher jet size my MPG went to around 36 mpg and sooty rear brake lever and spark plug. Very sooty.

I will try adding more spacers.

Man this Jardine is hard to tune.

Title: Re: Carb Tuning: Garbly sounds
Post by verslagen1 on 05/29/14 at 07:52:56

Yep, you are compensating a lean setup with an overly rich needle setting. and sparky could be sooty cause of that.

proper way is to set the jets 1st then adjust the needle.

Title: Re: Carb Tuning: Garbly sounds
Post by justin_o_guy2 on 05/29/14 at 08:50:30

The Jardines are Jard Ones to jet to,.,The Dynas are easy,,