I replaced the O-rings and copper washers on my W124. I did this job 18 years ago just perfectly, and then did the job again just yesterday.

I thought I put everything back pretty well. I put the fuel lines back on the delivery valves tight, but left the upper part of the fuel lines that go directly into the injectors just hand tight because I know the car has to expel the air when cranking. I know the car has to crank a while, I made note the last time I did this that the car might have to crank for 45 seconds. But I might have cranked for over a minute and the car got absolutely nowhere, not even sounding like it's ready to fire up. I had to stop to recharge my battery and will try again later today. Hopefully all it needs is another 15 seconds at this point, but there's no fuel at all coming out of the upper metal fuel lines. It seems to me 18 years ago that I left those loose and fuel and air bubbles came out, then you wait until nothing but diesel fuel comes out, then tighten them up for good.

I just wanted to ask, was it the upper part of the fuel lines that I was supposed to put on hand tight, or the lower part at the delivery valves? I think it's the upper but.....seems like something is not right. If nothing else, it seems like I should have gotten fuel coming out at the upper part after cranking for that long.

1991 300d, 258k