ORIGINAL: RC_BEAST
i just got done breaking in my sts .28 engine. i think they are a great engine but i have problems with the temperature
What are the temps? 300degrees F plus?
Have you RTV seald the engine? Replaced all fuel lines? Replaced the tank?
If attacking all the possible air leaks does not help, check your tuning. Also, use the correct plug for the nitro % you are using.
If all else fails, inspect your carb thoroughly. If the carb is faulty, call STS and ask them to replace it, STS sometimes lets a few bad carbs slip out since they have large machining tolerances when it comes to the carb.