movinon

I have experienced something similar with my stock 2010 G37. When the car is started the first time of the day and I drive slowly down my one mile long street I can feel it slightly bucking. This only happens when the car is first started and lasts for only a few minutes. If I give it a bit more gas it goes away. I don't notice this all the time.

Jeremy1607

Did you find out what the problem was and how did you fix it ?

movinon

I started to put a bottle of fuel cleaner (Techron) in the gas tank every time I change the oil. I haven't noticed the slight bucking on initial start in awhile. Don't know if the fuel cleaner helped or I just got use to it.
I have owned the car for 5 years and have had no problems with it which includes no rattles or transmission problems that I read about on the forum.
Normally I would of traded it for a newer model after 3 years but since this car does everything I want and fits all my needs, I just keep driving it.
I also have no use for electric steering or run flats, so that has kept me away from a lot of new models.

Sam Phan

Did you just install the aftermarket intake? If you are then it is probably because of loosen valve connection .

Jeremy1607

Nope, I started having this problem after I installed the Splitfire ignition coils.
I thought it was them but I've changed the ignition coils back to OEM and still the same. I guess I just have get the car checked and see if it throws any error codes on my next service .

Said Amir