after one week i just tried to start my ahf 3d heli but the engine is not getting started it got struck
starter shaft is not rotating
so i opened head of the engine and checked it and tried to rotate, its easily rotating !!!!!!!
but i put my head and screwed it up, it again got stuck
is their any prob with piston? its getting stuck at top..

i tried this without fuel ,should i try with fuel and seee?
iam getting tensed with this engine plz help.......................

The first thing to check...  does the starter have enough power (has it's battery been charged) ?  When the head is on, there will be resistance due to compression, and if the starter is weak then it would not turn.

BTW, why are you removing the whole head, why not just remove the glow plug alone, if you want to test ?

Ya the battery has sufficient power for turning but I tried this without fuel so I think if the fuel is in it ,turns
Any way thanx for ur replay
I thought something got stuck at piston n I open the head and then it turned very easily but when I put on the head its getting struck ,I haven't tried with fuel I should try today
The parts of engine are good