Engine Problem's

Guy's after tower clear me I spooled up the engines for take off the #1 spoled up with no problem but the #2 stayed at idle althrought the both throttle's were pushed forward on my 737-900. I taxied off the runway shut down both engine's and restarted with no problembut when I spooled up both again but only the #1 engine max out the #2 engine only spooled up to 22% of N2 what am I not doing or doing wrongthank's muchAlvin B