[claydbal_1590]

try compression check with the carb slides and and butterflies open. you may just find BOTH problems. a vacuum test will give clues too, but since you have limited data, just pull the slides and hold the throttle fully open and run a compressio tes again. make sure battery is fully charged between each cylinder test.

 

[claydbal_1590]

No need to pull the slides.

there is if a slide is not rising, or is stuck.