If you have a 'proper' VCDS, then go to Basic Settings, Block 4 and click the TDi Timing button. With the graph up, choose your engine (bottom on the list for the 2.5TDi) and get it between the lines. The engine will cycle between full advance and ****** every 10 seconds, and the line will only be visible during the ****** cycle.
If you have VCDS Lite, or some 'other' copy
then TDi Timing doesn't have the 2.5 engine.
In this case, after starting the car, go to Measuring Blocks, Group 19, and check commencement of injection stored in the memory during start up. It should read between 2.0 ATDC to 4.7 BTDC. Once the engine is running, get it up to a temp of 85C - if you can get it that warm! In Basic setting, go to Group 4 and your timing should read between 0 ATDC and 4 ATDC when the display in zone 2 reads 'retarded', and the injection valve duty cycle should be 100%. When you are in Basic settings Group 4, the engine will cycle between advance and ****** every 10 seconds (it starts to 'hunt')
This method works, but not as accurately as the VCDS method and is complicated
The Basic settings is important, as in Measured Blocks, the pump ECU will adjust the timing. This means you may have problems with a non-genuine Vag-Com.
As has been mentioned many times before, you cannot time this pump effectively without the dynamic check, although I adjusted my first one by trial and error, gradually retarding it until most of the 'bark' had gone. When my Ross-Tech lead arrived (less than a week delivered!) I wasn't terribly far out.
You really do want a genuine VCDS and lead, plus a copy of the Elsa-Win manual system, or similar if you are working on these cars.:thumbsup:
