I have an HPI rtr rs4 with a O.S. 12cv-rx. I just bash around in parking lots. My car will run perfect for a tank and then 30 minutes later if I try and run it again it will start and then stall immediately when I accelerate. This has happened on numerous occasions where the only difference between the time my car is running perfectly and stalling when I accelerate is maybe a 5 degree difference in temperature. I try to make slight adjustments to the low speed needle and carb opening but it still just stalls when I accelerate. Then after a little while the pull start locks up and the engine floods and it's not like I'm over priming it or anything. The other thing is that before it stalls the engine will vary in revs. Please help, I'm really stuck. Thanks.
same here....except i cant run my car at all! plus, i have to reverse my starter box's polarity because if positive is with positive and the starter box wheel is running clockwise, it unscrews everything in my motor!!!!!!