Just got back to this. If you are having a problem on warm start it is usually due to a leak down of fuel pressure. The easy test is turn the ingnition on you will hear the fuel pump run for a couple of sec's do it a couple of times. Then try to start, if it starts up with no problem, then you have a pressure leak some where. It is usually caused by the accumulator, if not then it is a leaky injector.
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)