I have a t-maxx 3.3 4908 model from 2009 that was just running really good one day and then it landed on its motor and its been running really rich since. Whenever you hit the throttle it will run really rich and boggy and spit out TONS of smoke for about 15 seconds and then just shut off. Its running so rich that you can tip the truck over after you ran it and oil will come out the tail pipe. We replaced the original carb and it made no difference. Me and my dad are at our wits end trying to fix it and he is a mechanic. We are going to try to air check it. We turned the high speed needle to 1 3/4 turns out and low speed to about 1 1/2 turns out in around 85 degrees F and 60% humidity.