yes speed i think you are right about it being exhaust residue as the bottom of the compartment is open a bit so thanks for that but it still dies away at
full throttle,i tried lees suggestion and it did work but after stopping it wouldnt start again until it cooled down but when i did start it again it still did the
same thing die away at full throttle.my prop is a master airscrew 11x6 as for the fuel what i do is use liquid gold 2000 pro synth 15% nitro 1 gallon and
split that gallon in half and mix it with a half gallon of methanol and castor oil so now i have half synthetic half castor with a 7.5% nitro content,the fuel
is only 2 weeks old ive tried the fastrax No5 platinum the os No8 and No 3 glow plugs,i dont know what you mean by running muffler pressure but i do
have a tube from the tank to the muffler