340 starting issues

It has spark, don’t have another carb. Seems to be getting plenty of fuel as carb it noticeably wet. I’ll try again tomorrow and see pull some plugs to see how wet they are. Has anyone had similar problems from the shitty fas affecting their carb?
Did it ever backfire? Holley's have power valves that can blow out causing some strange issues. Oops, I should have read all the posts before commenting.