Problems with misfire during acceleration. Caused by air in the diesel fuelsyst?

[Ti Kan]

Glenn Skog writes:
> I have a problem with my A6, 2,5 TDI, 1995. It has runned about 187 000 km.
>
> From time to time, during acceleration when the engine is running about 2500
> - 3500 rpm the engine starts to "spit back/misfire". If I stop the car and
> take the engine up to 3-4000 rpm. with the gear in neutral everyting looks
> normal.
>
> In the beginning I thaught it could be something wrong with the
> dieselfilter. Two filters and 25 000 km later, this still happends from time
> to time. I have checked the used filters and they look ok, witout any dirt
> inside. I also use original audi filters. I have inspected the fuel tank but
> it was also quite clean inside.

The first thing that I would do is to check to see if the ECU has
recorded a fault event.  That requires, however, a VAG-1552 scan tool
or VAG-COM.  If a fault is stored then it should be apparent from
that what the problem is.

-Ti
01 S4 2.7 biturbo quattro
84 5000S 2.1 turbo
80 4000 2.0
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    ///  Ti Kan                Vorsprung durch Technik
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