Get a Can oif This:
https://www.suzuki.ca/en/carb-combustion-chamber-cleaner-385g-aerosol-can-500REmove the nozzlel and attach a small hose and step it up to fit inside the fuel line going to the carbs from the tank.
Drain the carb bowls.
Slowly release the cleaner into the fuel line (you can go fast at first but it does foam up so you need to slow down and let it settle) it wont take a full can but a fair portion. Eventually it will come out the carb overflow drains. (IT WILL EAT THE PAINT OFF THE ENGINE) be careful.
Once it is inserted let it sit for 24 hours.
Drain the carbs again and reconnect the fuel line to the tank.
Starting the bike will be difficult at this point (took me over 20 minutes) so have a battery charger on hand.
Once it starts it will smoke like crazy and run like crap. it will cough and miss and choke and puke and everything else. Leave it running. It will smooth out eventually.
This will leave your carbs shiny and new on the inside and hopefully the bike will run better.
This stuff is awesome and far far stronger than Seafoam or berrymans or techron or any of the others. It is designed to be a cleaner not an additive.
