Running Too Rich

DisillusionedPrepper · 01-04-2017, 12:10 AM

The choke plunger sits in a passage that allows more fuel when the bike is cold so it does sound like it is working.

I think you may have clogged the idle jet or the air bleed circuit.
You have to completely tear the carb down. Remove the idle mix screw, use a can of carb clean, and the tiny straw to blow thru everything.

There are no sewing needles that fit these tiny idle jets so I find that seperated strands of plain copper wire works in most cases.
For larger jets I use torch tip cleaners that you can get anywhere (almost) for about 7 bucks.

Carbs can get goofy, and take a few attempts to get really clean so I would try again.

Also the white spark plug is showing a LEAN condition. so No riding until you sort it out.
The mixture screw should be between 1.5-2.5 turns off seated. Otherwise you have the wrong idle jet or a dirty carb.

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01-04-2017, 12:10 AM	#8
DisillusionedPrepper Join Date: Dec 2016 Posts: 109	The choke plunger sits in a passage that allows more fuel when the bike is cold so it does sound like it is working. I think you may have clogged the idle jet or the air bleed circuit. You have to completely tear the carb down. Remove the idle mix screw, use a can of carb clean, and the tiny straw to blow thru everything. There are no sewing needles that fit these tiny idle jets so I find that seperated strands of plain copper wire works in most cases. For larger jets I use torch tip cleaners that you can get anywhere (almost) for about 7 bucks. Carbs can get goofy, and take a few attempts to get really clean so I would try again. Also the white spark plug is showing a LEAN condition. so No riding until you sort it out. The mixture screw should be between 1.5-2.5 turns off seated. Otherwise you have the wrong idle jet or a dirty carb.
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