1981 300D

I always seems to be, I get a free day to work on the car and I can't get to my goal because some other issue comes up. Ugh!

Went for a test drive, came back, popped the hood and fuel was spraying all over the engine compartment. The little plug at the last injector is gone.

1. Is there supposed to be that much pressure in those lines? The fuel was easily shooting up three or four inches aff the injector. I'm wondering if there is some over-pressure thing happening with the IP that just blew the plug off (these lines are only about 2 months old). But then again, if there was too much pressure I would think it would dislodge one of the lines earlier in the circuit. Any thoughts? Maybe it just wasn't on tight enough.

2. I'm gonna go looking for the old one in the street now. If I can't find it, anyway to rig something up until I can get a new one?

3. Is there an "IN" and an "OUT" on the injectors? I just plugged them in in series with where the injectors were, but with two nipples on each injector, is one in and one out?

Thanks in advance!

Eric
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1981 300D