Hi, i have an audi A4 2000 mod 1.9 tdi tiptronic, and in the last week the car suddenly starts to shake and loss off power switched on off the ignition and it run normaly but today this problem hit in again and wount diseapear when i switch on off ignition, so now its a problem, when i take a fault code reader and the codes i Get is: P1264 PD unit injector , cyl 4 (n243) regulation range exceeded and P1264 the same but cyl 2 (n241) and P1267 the same but cyl 3 (n242)
And the last fault code is P0304 cyl 4 misfire detected,

Can sombody kind tell me what this is that have happend and what parts do i check or replace, or is it sombody so have had the same problem ? I need some hjelp with my car.

Best regards John.