Car stutters when first started and driving

infiniti
i30

#1

I have a 2001 Infiniti I30, 106000 miles. I had the regular services performed and am noticing the car hesitating when I first start and take off.After a minute it runs fine and has no more problems and rpms are fine and steady. I had the sparkplugs changed @99k. I tried pulling codes no luck, tried seafoam no luck, checked battery and hoses nothing. Any help is appreciated


#2

How is the fuel pressure? Check it from cold start.

Check out the coolant temperature sensor.