Guys my car hesitates usually in fourth gear at around 2000rpm, I mostly notice this while going downhill foot off gas, but when I apply the gas I notice it hesitates or bucks. Sometime I notice it will do it in 3rd gear also. Everything has been done to this zc dohc motor, complete tune up, new fuel filter also replaced the tps. Another problem, not sure if it's related is the car will not start in the morning normally. When I go to start it will run rough for a few seconds then even out and idle normal. I have a fuel pressure gauge hooked up and I am getting 27psi at idle with the fpr connected, I am not sure if that is normal or not. Any ideas?