I bought this Infiniti g35x sedan, I recently had oem NGK spark plugs and Hitachi coil packs installed, also both cam sensors replaced trying to fix this hesitation problem when the engine is warm, when it is cold the car drives perfect any guidance? Only happens when the engine is warm and drives perfectly after. Also note that it only happens when lightly accelerating when I press the gas a little harder it doesn’t do it as often. The car is not throwing any codes or any pending codes.

 

Sounds like a vacuum leak, what year?