I have a Suzuki GSX600F Motorcycle It starts and runs for about 5 kilometers and stalls

SOURCE: Car starts then stalls once the engine warms up.

You need new timing belt and gears. Buicks gears are made of plastic, and become a big glob. Nothing for the timing belt to grab onto.

SOURCE: I have a problem with

Sounds like you may either have a bad ignition module or crank position sensor

SOURCE: Won't stay running

sounds like you have a bad ECU unit. have it checked.

SOURCE: no spark no fuel pump

Either your pump is low capacity or the filter is partially plugged...Check fuel rail pressure and see if delivery is adequate. Does it start if you spray carb cleaner into the throttle body while it's not starting?

SOURCE: 1996 vw polo- engine keep stalling

Check the fuel filter.