The bike ran great then sat for about two months and when I went to start it, it would only run with the choke full on. Took it apart and cleaned and blew out every damn oriffice, put it back together exactly to the setting as it came apart and no differance. Used new gas, new plug and now I'm going to tear it apart one more time. Totally baffeled ! I've played with carbs for years and this ones got me, and it's so simple ?
SOURCE: bike will not idle witout having choke on a bit
I have a supermagna and used fuel stablizer once and it wasnt fit it gummed my carbs up,ive cleaned mine often and it isnt rocket science,remove the tank airbox assembly,loosen up the boot flanges that hook the carbs to the motor(ones on carb)then remove the carbs,then the cables,choke and throttle,do not remove carbs from assembly(leave all 4 together)remove the bottoms and tops of a carb,removefloat and jet,then remove all the brass jets and clean them so you can see through holes,,blow out all the holes in carbs,and reasemble,works for me every time,about two hours to do,good luck
SOURCE: I have a 82 honda cb750f. The bike runs fine with
Standard jets for the CB 750 are 120's, popping and kicking are usually due to running lean which is probably why it runs great with the choke on as that riches it up. I've run 115's with no problem but 100's??? Maybe was trying for better fuel mileage when gas was $4.50 a gallon?
SOURCE: 79 gs550 - uh ohs in wiring...
When you reassembled the bike did you pinch any of the wiring harnesses? Trace the wiring through the bike and make sure everything has a solid connection between their respective power sources and activation switches. Alot of time bikes run wiring under the gas tanks so you need to make sure that you didnt cut anything when pputting it back on (if you removed the tank)
SOURCE: 81 Suzuki GS650GL only runs on full choke
Pull one of the fuel hoses off of it's carburetor, and stick the end in a clean can or bottle. Turn on the fuel tap--you should get a thin stream of fuel. If it just drips, you need to clean the filter screen just above the fuel tap bowl. Hope that gets you running well.
SOURCE: yamaha 125 grizzly starts and idles when choked but dies when acc
Take the carburetor apart again, remove the main and idle jets and idle mix screw, plus the float and needle valve. The main jet holds an 'emulsion tube' in--look inside where the slide valve moves, you should see a short brass tube projecting out of the bottom. Carefully push down on that tube with a plastic rod or wooden dowel, it should drop out the hole where the main jet was. Chances are that the tube is dirty and needs to be cleaned--look carefully at the series of small holes drilled into the sides of the tube. These small holes deliver air which is mixed into the fuel passed through the main jet. That air comes from a small hole just inside the intake side of the carburetor. The long needle that sticks out of the slide bottom controls low to mid-range speed fuel-mixture. Check that the 'C' clip on the top end of the needle is in the center groove and that the retainer spring is pressed down the 'C' clip. Now soak the whole carburetor with spray cleaner, then blow out all passages with compressed air. Don't soak the rubber-tipped needle valve from under the float. On reassembly, set the idle mix screw 1-1/2 to 2 turns CCW from CW stop. Adjust for best idle after you get it running and warmed up. I hope this long winded explanation helps!
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