What would you do second?

Huw Powell audi at humanspeakers.com
Tue Aug 5 08:02:43 PDT 2014

You rotated the distributor?

So now your ignition timing is off (see symptoms 1 and 2).

If the flywheel and the camshaft(s) agree at TDC (IGNORE the front of 
crankshaft/vibration damper mark), put a timing light on it (per the 
manual, you might have to disconnect some things to benchmark idle 
timing) and put the dizzy at whatever BTDC setting the manual calls for.

Or tinker by ear/hand/driving test.

Your static advance is probably off by 20-30 degrees.

- Huw

On 8/5/2014 12:01 AM, Brian Pleet wrote:
> 90 Audi90Q 20V MAR89 edition - replaced valve stem seals, head-in-place, to
> address smoking issue. Aligned flywheel, crank, camshaft at TDC. First
> issue was no start.
>    Thanks for your suggestions. Good news, rotating distributor at TDC  to
> align rotor, Hall sensor and distributor case got it started with clean
> exhaust. Not so good, second issue;
> * long (15 sec+)  cranking to start - have to jiggle throttle to get it to
> catch/start
> * idles evenly, light throttle makes it choke, heavy throttle response is
> slow for the engine to spool
> * code 2232 suggested broken connection to air mass sensor...repaired but
> no change to behaviour
> * code 2242 suggests CO-potentioneter voltage low?
> * code 2212 throttle potentiometer out of range?
> * code 4431 Idle air control valve, had unplugged to determine effect on
> throttle
> * code 1111 Bad ground to ECU?
> Replaced distributor cap, rotor, plugs. Inspected vacuum lines visually for
> leaks. Air mass sensor tested in spec to Bentley.
> Suggestions?
> Brian
> 90 90Q 20V
> 95.5 S6
> 06 TT roadster
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