Have a 200 Kodiak 400 starts and idles fine when you give it throttle it sputters and wants to die put brand new carb on and it's gotten worse what else should I check before I start to just throw money at it?

 

Fit a new plug. Check with a voltmeter across the battery, that voltage from regulator, with engine running/revving, does not go over 14.5v. Clean the jets in the old carb out with compressed air and put that carb back on. If none of these work, get the workshop manual and start checking ignition system for faults.