Hi all, new to the site and plenty of good info...
I have trawled through all the E46 problem pages but cant quite put my finger on my problem and was hoping for a bit of help from someone with a bit of previous experience...
The Bmw is a 320d 2002 model with 130k with full service history.
I have a feeling that one of the injectors has faulted as there is a distint diesel knock. It seems to be coning from the bottom end which initially worried me as i thought it might have been really serious. I have taken the sump guard (belly cover) off and felt around the sump area and there are no obvious signs that it is in the bottom end...ie, pistons, crank etc.
I have now taken the engine covers off and held a screw driver handle to each of the injector top and you can definately feel the knocking through the one closest to the bulk head.
The knocking is all the time, not too bad on start up but you can hear it whilst driving and under load. The problem seemed to have occured on a motorway trip, i thought i would put some super diesel in and not long after the knocking just appeared, hasn't got better or worse in approx 200 miles of driving since but it is worrying me now as i have read loads of horror stories about new engines etc etc
Can anyone guide me in the right direction?