I changed the fuel line from the heater to the pre-filter. That solved the air bubble issue but it still Idles rough. The interesting thing is that when the engine is cold it runs very soothly. Once it is up to normal temperature, it starts rocking and "missing". It smooths out again when either the transmission is placed in drive or reverse, and when the air conditioning is turned on.

The local dealer wants to sell me an IP pump but that doesn't make any sense to me because the car runs fine otherwise.It has plenty of power and accelerates nicely. Their mechanic also said that the '98 E300 does not have an adjustable rack screw.According to him it's electronically controlled. Is this so?

Does anyone know if the EC merely increase the fuel flow when the A/C is turned or the transmission is placed in drive, or does it increase the delivery pleasure in order to maintain the same RPM.

Nick

1998 E300 TD
160k