Thermo Quad Help!

Okay you guys were right, the jet boots were leaking, and also I had to put in some O rings into where the primaries pic up fuel. Both were leaking. but now I have another problem, she'll finally fire up and she'll rev up for a while then die, any reason for this? I mean it even back fires a little,.... is the fuel pooling up in the intake? anyway to fix this?? Thanks guys!