80 750K running on 2 cylinders? No Power

[combat]

check your carbs as they get dirty and are a pain to get right and goodluck

[Rick]

My 76 SS had same prob. After 2 yrs. I hope you found it. Petcock had crap in it. Very little fuel flow with ON. Switched to RES. Motor came alive and ran great. BTW, this is with a full tank.