Kirk,
What you're saying makes so much sense. I probably misunderstood what the service guy was telling me over the phone. It has to be the EGR valve. I am pretty sure now that the guy was talking about fuel sediment and not carbon monoxide residue. As you can see, I am not too familiar with this.
My VX hesitated once in a while during accelerations. Maybe once every month.
I'll let you guys know tomorrow what happened exactly.
Thanks for the technical details.
I will also ask for a written document for maintenance where they state and recommend to flush the injectors every 20k.
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