I'm new to this forum so I thought I would give this a try.

My wife has had this 240D for years now and we think it needs a fuel filter change. She hasn't changed it (them) in at least 4-5 years. No surprise but it's not running well right now. Low power. I gave it a shot and changed the primary and secondary fuel filters but I can't seem to get all the air out of the new line. (I'm guessing that's all it is). Here'e why:

The original fuel filter(I think it's the primary. The small one that take a 90 degree turn) was slightly smaller and you couldn't see through it. The new one is "just" slightly larger around and clear. I can see the fuel coming through when I pump but I can't pump it enough to get "all" the air out. The fuel starts coming out of the pump shaft.

I tried losening the large filter in case there was an air pocket that wasn't allowing the fuel to move but fuel comes out the large filter so it "appears" full. I was told to try to remove one of the injectors and pump it or turn it over and try to force the air through and out one of the injectors. Still no luck. I "think" I can identify the injectors. They seem to be the metal tubes coming from the fuel distribution device to the head. It just won't turn over. (It fires and tries but it sounds like no fuel is getting there.)

I am not a mechanic and ony change oil and small things like that.

One note: When I first tried it the car ran for a few seconds then died. I'm assuming it was using the fuel still left in the lines from the filters to the block.

I tried to search the forum and I can't seem to find the exact fit when somebody describes fuel filters.

Any help out there?