In another thread I mentioned that now I have knocking at idle, especially when cold, after doing the delivery valves, though I'm getting the feeling that the knock is very slowly going away as I drive the car more. That's why I said that the fuel system on these cars appears to be very sensitive. Maybe you just need to load up on some injector cleaner and drive the crap out of your car. There may be nothing wrong with the injectors, but you may have some carbon buildup in the prechambers that needs to work its way out.

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2004 VW Jetta TDI (manual)

Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL