ORIGINAL: ccameselle
I i have a second TH.75 that I installed a new Piston and sleeve. I can not get that engine to run. I am 4 turns out on the low end needle and 2 turns out on the High speed needle. It is super tight and I have tried the heat gun to the head of the engine and still very hard to turn. Once I got it to run for like 3 second and it turned off. I haven't been able to get to run again. I checked the plug and it is getting heat. Help!!!! I have a P51 waiting for this engine!
Thanks in advanced
Set the LS needle about 3 turns and the high speed needle about 3 as well.
Prime the engine well, and make sure that fuel is hitting the carb not just the remote HS.
Keep your lines as short as possible and be sure that the muffler nipple is clear and pressure is getting to the tank.
Did your engine run and speed up during those three seconds and then abruptly stop?
Or did it run sluggishly and slowed down to a stop?
I would bet that it got a bit of fuel ( which is why it started ) but not enough flow to sustain the run, so it shut down.
Lack of pressure, air in the lines, a misplaced clunk, etc. can all account for this.