Quote:
Originally Posted by JohnM.
My M103 has had the same exact "chugging" after heat soak, goes away after one or two shifts completely. I've replaced a LOT of things since owning the car and the chugging hasn't changed. My current best guess is fuel injectors leaking a bit of gas after shutoff, causing a semi-flooded/chugging condition on restart.
Performance and gas mileage are above average on my car too, so I'm not too worried about it.
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Regarding yours, IMO, the system pressure to open the injectors at idle is much higher than the 3.1bar the accumulator holds it at. If they were leaking with the car off, they would be leaking more fuel across the driving range. So unless your fuel economy and power is weak, I would look elsewhere -- Possibly airflow potentiometer, or the EHA.