lack of power on 2003 Volkswagen Jetta TDI

lack of power

Asked by for the 2003 Volkswagen Jetta TDI
2 answers
Could be anything from a EGR to a simple fuel filter. EGR is common on that vintage.
ALSO POSS PLUGGED CATT OR RESTRICTED EXH SYSTEM OR AIR FLOW SENSOR.REC COMPLETE DIAG AS NOT TO GUESS