carb problems RPM hang

Tee-Dub · Oct 18, 2021

Jman said: ↑

Figured it out, I ended up getting a used set on ebay. Still went threw the carbs, cleaned everything, but when I started the bike, pretty much the same issue. Bad idle, raw fuel smell, open the throttle and it would rev up and hang, till you turn the idle speed screw and bring it down, then the rpms would be to low and it would almost stall. So started looking at them and noticed
1 the idle speed adjustment almost maxed out
2 really low vacumme on the mercury carbstix.

Powered up the fuel pump with the bike not running and sure enough fuel starts pooring out the vents. Don't understand how it even ran like that lol

Soaked the float needles in silcon spray for a little bit. Got it all back together, ran the fuel pump to prime and tested the carbs (made sure they didn't over fill again). Started the bike, and huge difference, no hang, no raw fuel smell, and engine vac much higher. Drove it around then went back to the shop to sync it up. All is good, minus the finishing touch on the A/F idle mix.

I am having this very issue right now. I feel like the floats are letting fuel by. Brand new float needles, seats. Set to 7mm. Plugs are coming out wet. Idle hanging and bike revs like crap.
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