new guy,
Try turning the key to II should hear the fuel pump if it runs for a couple of secs then off that is good, do this three times in a row then try and start if she starts first time your fuel system is not holding pressure. I also assume this happens when ever she sits for a while. If no difference the you have probably got a fuel system problem. Could be your cold startvalve or temperature sensor but the system is not enriching the startup like it should. Check your duty cycle make sure she is not to lean.
m

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Martin Ingram
Colorado Springs
2005 320 CDI
2006.5 VW Jetta TDI
1991 560SEL (179000 Sold)
1972 280SEL 4.5 ('The Lead Sled' 320000 miles when sold.)
1972 220D (225000 when sold)