I've a 7+yrs super4 spec2. The problem is, after travelling for a short journey, the bike engine dies off as if the petrol is not going into the carburettor or the carb is not feeding fuel into the cylinders. I rev the throttle but there's no effect. The engine dies off. I tried opening the fuel tank cover thinking it could be airlock and after a few minutes wait, the bike can be re started again and I can continue my journey. This problem recurred after more than 6months(it's happening quite often before) until I changed my radiator water pump fan. The engine dying off while riding eliminated until two days ago when I changed new spark plugs. Please help with this problem. Thank you

If you are using old fuel ? drain the tank and replace all fuel filters.
Make sure before you fill your tank with new gas . you take a flashlight
and look in the tank, and if you see anything at all that looks like rust
flakes or water, you must clean before you replace any filters or gas.
Now pull your spark plugs back out and clean with steel wool, check
gap , and put plugs back in plug wires only, then rest plug tip against
head metal, crank bike look at spark jumping from plug. Should be
blue, if it is ? Install plugs and run bike . should be ok. If it still cuts
out then your carbs need to be rebuilt, diaphram will fix it but if you
go as far as taking your carbs off , you should go the distance and
do a complete rebuild, you will be very proud of yourself, when job is complete. If you are using old fuel ? drain the tank and replace all fuel filters. Make sure before you fill your tank with new gas . you take a flashlight and look in the tank, and if you see anything at all that looks like rust flakes or water, you must clean before you replace any filters or gas. Now pull your spark plugs back out and clean with steel wool, check gap , and put plugs back in plug wires only, then rest plug tip against head metal, crank bike look at spark jumping from plug. Should be blue, if it is ? Install plugs and run bike . should be ok. If it still cuts out then your carbs need to be rebuilt, diaphram will fix it but if you go as far as taking your carbs off , you should go the distance and do a complete rebuild, you will be very proud of yourself, when job is complete.