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Audi Help
Hi Ralf,
Had some more thoughts for you that may make your car run a bit better
although probably not the cure for current problems.
1 Purchase a spray (aeorsol) can of carburettor / intake manifold cleaner.
2. Remove all the breather pipes that run from the rocker cover to the
airflow meter, clean all those out with the spray and old bits of cloth,
replace any hose that is split or has collapsed. Pay attention to the metal
pipe which should run from the rocker cover down the right hand side of the
engine, to more or less where the sump joins the engine block, this pipe is
worthy of a good clean. I would not be surprised if it was full of old oil
and condensation, I have owned a few VAG cars with the cylinder engine and
all of them have suffered with this pipe becoming partially blocked.
3. Remove the trunking on top of the air flow meter to the intake manifold
and clean that also. Whilst it is off have a look at the plate in the air
flow meter and VERY gently clean that also.
How far do you want to go?
4. The next step depends on how brave you are, have look into the intake
manifold and you will clearly see the throttle body with two butterfly
openings inside it, if it's dirty with hardened deposits if old oil and fuel
then the best thing to do is to take it off (held on by 4 allen headed
bolts) and give it a thorough claen being careful not to damage it in any
way, I would not dismantle it in any way. It is also possible to remove the
idle speed setting screw and clean that as well,You will need to replace the
gasket between the throttle body and manifold.
This is quite a labour intensive task, but I have done it two or three
times and it has made a difference to how the car performs. You may find
that the idle speed goes up after cleaning the throttle body, easy to adjust
though.
Keep you busy if nothing else, have fun!!
Regards
Iain