Question about 1992 Suzuki DR 650 RS-E
O-kay here's the problem. My 95 DR650 runs rough but will smooth out for a bit during the cousre of a ride but always returns to running rough. I've pulled the Carb cleaned and inspected all parts, changed the gas tank(cause the vibrations cracked the base where it bolts in), changed plugs,checked coils and wires, cleaned then replaced airfilter. Frankly I don't know much about cars but I really can't think of anytning else. I love the bike but right now I want to shoot it. Anyone got a suggestion. No shooting it isn't the answer. Could it be a timing issue some how?
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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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
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