not running on all cylinders

[lucky6man]

97 kat 600. left two cylinders arnt firing. i did the spit test and it doesn't sizzle like on the other two. when i tested it for spark it did have a good spark. fuels also coming out of the valve and the hose is not pinched.diaphrams all look good. could i have got something in the carbs jamed when i rebuilt them? ran fine last season. just figured id rebuild them b4 starting it this season since they did seem a little gummed up last year. any other easy thing i should check before riping the carbs out again?

[JokerZwild]

Check those carbs again, make sure you got good air/fuel supply getting to all the cylinders.

[jonathanmaples]

how long has it been down? id try and run it a lil if it hasn't been rode in a while if it has id put my bets on the carbs.

[ATOMonkey]

Pour some fuel system cleaner down the hose for the 1&2 carbs. Probably have some gunk in there blocking things up. Could be in that plastic tee.