Recently I've changed spark plugs and had my carb rebuilt bike runs great, but on a road trip to Maryland from NY at higher speeds my bike started bucking as if I was going to fast.When I came off the throttle It responded normal. Do You think That I might have a clogged fuel filter or do you think It may be an electrical problem...Need new wires,Spark solenoid? please help me out I'm stumped!!!
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It sounds like the pair valve hoses have come loose or un attached to where they are supposed to go.You have constant velocity carbs on that bike and those hoses need to be correct in order to gain top speed.They attach to the line that goes to the velocity diaphragms for the carbs.
You might try looking at your transistor it could be the cause of your problems. Even though it is a carb bike it will still have an transistor pack or similar that controls your spark. It is possible that failed. Try one from a bike that you know is working if that makes a difference that is your problem.
Although I'd also look for broken wires and poor contacts.
If your good with a multimeter and you know the specs of your coils and transistor than you can try and test them.
better check for the ignition coil for proper sparking or igniting of current in the comprssion chamber, check the ignition coil spark plug wire, check the spark plug, check for proper fuel supply in the flow system to Carbs, check for Ignition timing of the bike, or still you cant solve or still worried then dont worry better take the bike to nearest aurhorised Suzuki service centre for better assistance on this problem surely the problem will be solved.
Had your bike sat a long time without being started? Been down real bumpy roads? I worked on a friends 1999 883 Sporty recently, it needed the carb rebuilt. I cleaned out all jets and passages, and float level was reset, it was out of adj.. Also, when diagnosing bike hard starting and backfiring out the air cleaner problem, I found the timing plate had losened up and the timing was off about 7 degrees which I adjusted back to spec before I rebuilt the carb. The plugs were also clean, not dry..Runs Good Now. The shop 1st looked at bike before I did, they said it was an Ignition problem and changed out the key switch which did Not solve problem.