LoloQuattro (2012-02-07 09:23:32)

Audi ADU very bad cold start


LoloQuattro 07/02/12

Thanks for your request for additional details, I have inserted some clarification


03/02/2012

LoloQuattro

Now the hot start and idle is solved, I still have a problem to start.

Here are the parameters for cranking.

Priming, crancking setup

Primepulse 0.0ms

Hot start primep temp scaling 20%

Cranking threshold 399rpm

Crank Ignition advance 9.0°

Crank VE 60%

Afterstart setting (-40°c) 12 cycles

Afterstart Warm Time (77c) 0 cycles

% of Warmup Enrichment at highest RPM 66%

% of Warmup Enrichment at 100kpa 90%

My crancking enrichissment curve is:

-20°c 300%

0°c 200%

30°c 150%

70°c 100%

Afterstart Enrichment curve

-20°c 275%

0°c 181%

30°c 138%

20°c 100%

Warmup Enrichment Curve

-40°c 140%

-30°c 135%

-20°c 130%

-10°c 127%

0°c 124%

10°C 120%

30°c 110%

40°c 107%

60°c 100%

69°c 100%

IAC duty at crancking

-40°C 85%

77°C 42%

IAC reference curve just some points

-40°c 60%

...

0°C 30%

...

69°C 23%

Any suggestion ?


What kind of injectors and fuel do you use?


LoloQuattro 07/02/12

Bosch green 440cc


How starting is bad? Is it cranking forever, or firing some strokes but cannot rev up, or revs and dies? ...


LoloQuattro 07/02/12

It did not start at all, it is crancking forever, I must inject Ether to have a start and then it is OK.

Once warm if I stop, it can restart it is OK.


You should give more details, preferrably your full vemslog/vemscfg files.


LoloQuattro 07/02/12

I have recorded log, how to put a link or attach them to this page?