Question about Motorcycles
My bike is misfiring. Changed spark plug about three times because it comes out black after every ride. Ive emptied old gas. Checked oil. I am thinking its carb, but not sure. Rides fine at first then runs rough. One minute I'm going really fast and the next minute it's just putting around
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Posted on Jan 02, 2017
sounds to me like your jets are running rough, wich makes you loose power and make the bike run like sh*t, so simple re-jet it (65-75 dollars) and it will be running like a charm again
Posted on Jan 15, 2009
SOURCE: Yamaha 2002 TTr 250
Look around your bike near where the throttle cable meets the engine, when you pull the throttle, the cable pulls a quarter circle piece of metal which is connected to a spring, then connected to that should be a screw, that is the idle screw, turn it very slightly, usually clockwise to make the idle higher, and this should sort out the problem.
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Posted on Apr 12, 2009
SOURCE: 1995 Suzuki DR650 running rough
Ignition timing is preset and only very badly worn camchain or valve-train issue would have an effect.
You may have a problem with the floatbowl height.
It is an incremental fix, in that you set it and see how it responds.
The fuel availability is governed by the height of the float levels. This can be adjusted by bending the small brass tab on the float spindle. Try adding more fuel first, or bend tab upwards very slightly. you don't have to remove the carby every time, just loosen the front and back manifold clamps and rotate carby so you can acces float chamber screws. The float pin can be pulled out and tab reset. Don't forget to turn fuel off and have a spill tray ready when undoing floatbowl drainplug each time.
Site below has exploded view of the carby with part names, links to all sections of the bike.
Clean all the jets with a carburetor solvent and check fuel line for perishing. Are inlet manifolds in good condition and not have a chalky feel on the insides, they should be shiny and feel slippery for efficient results.
Posted on Oct 18, 2010
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