@metaculus, I thougt that question was already answered before on this other thread of yours.
If your motor stops after a few turns, after kick starting it, I'd guess as @bko suggested, that the power (voltage * current) supplied does not suffice to overcome the electrical and mechanical dissipation factors (e.g. internal/external friction, wire resistance, ...).
While the mechanical impulse added during kick start plus the electic energy are enough to turn the motor a while, with each turn the mechanical surplus exceeding the mechanical resistance wears off, till the energy provided does not overcome the mechanical resistance and the motion stopps.
You need MORE POWER!!! - as Tim Taylor (alias Tim Allen) would have suggested 