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A6 shape Audi 100 2.3 5cyl rotor arm - Mapmaker
All the better for some new plugs & leads, but still think it could go better (or rather, idle more smoothly). Had a little tug at the rotor arm with a view to buying a new one, and it didn't seem to shift - is there a knack to this? AAR engine.

A6 shape Audi 100 2.3 5cyl rotor arm - Roberson
Hi,

My 1993 Polo has a slight rough idle too, but for unrelated ussues, I changed the Distributor cap and roator arm on mine. The arm is well fixed on, and need a fair amount of pull to get it off. Tug a little harder and it should just pop off,(I dont think its clipped on or anything) but yours is different to mine so maybe its fixed on differently.

If you have a Haynes handy, have a flick through and see what it says.

Hope this is of some help.

Roberson

A6 shape Audi 100 2.3 5cyl rotor arm - David G.I.Davies
This rotor arm is actually glued on to the distributor shaft.To remove it you'll have to gently break it apart or more elegantly cut it off with a mini-disc on a dremel type tool.Ensure no bits of the rotor fall into the distributor.
A6 shape Audi 100 2.3 5cyl rotor arm - Mapmaker
Thanks, David.

Oh bliss. Nothing more or less than I would have expected. If I ever meet the man who designed this engine...