I was at a complete stop at a intersection in my 2012 infiniti m56x. upon acceleration the car started to hesitate and jerk forward (the check engine light came on) as i was pushing on the gas pedal. the car barely crept through the intersection and i made it to a parking lot. i put the car in park and pushed on the accelerator the engine was loosing power and skipping real bad. i had to have the car towed to the dealer because it was not drivable. the dealer said that the cam sensors were bad. the sensors were all replaced but the problem continued. after 4 months in the shop trying to figure out the problem and replacing numerous of parts the problem seemed to have gotten better however, now after the repairs the car now hesitates from a full stop and jerks forward after initial acceleration. the engine seems to loose power sometimes while accelerating while driving. *tr