[MFerrari]

Been doing a little work on my new 328GTS to get familiar with her and have noticed that there is hesitation when sitting in neutral and giving a little throttle. Also the throttle returns to a higher (1500rpm) idle sometimes. The plugs are new as of yesterday. The old plugs looked pretty good. I expect dirty injectors and have received new ones but I’m awaiting some other parts before I proceed. Am I correct in my theory or could there be other possible causes?

Another note is that the exhaust smells like I'm not getting a complete burn of the fuel.

[JohnnyTS]

Hi, I had similar thing the other day, I fueled up my 328, I drove away and when I pulled away at the next robot I noticed my car had no power, very slowly accelerating when I pushed the accelerator, then I geared back and noticed even less power, almost nothing when I try to accelerate, next moment the car stalled, I waited about a half minute, started the car with no problems and drove away like nothing was wrong, acceleration and all good, ??? WT ?

[Granucci]

I'm no mech, but cursory comments sounds like a poor air/gas ignition problem. IF smelling gas, I'm wondering what is happening to the cats.

So, could it be more in the motronics? As this is an older model, I would check the connectors that regulate the ingition and such.

like said, I'm no mech and many here have a much better, specific insight to the case. Plugs alone seem not total fix to me.