you know steve, I was thinking this as well but was not sure if it could really cause this. What should I test first the coil. and how does one test a coil. The wires, distributor, and plugs are all good and have all been replaced in the last year.
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)