BMW Repair: 1984 BMW 318i, fuel pressure gauge, fuel pressure regulator

Question
I just installed a new fuel pump and there is a loud vibration noise coming from the fuel feed line. The fuel pump is not vibrating just the line. Could it have something to do with the fuel pressure regulator or fuel relay? Please help as I am stumped.

Thanks,
Bill

Answer
Your question is hard to understand.If the fuel pump is loud it is working but the fuel filter may need to be changed(probably if you have not done it)so the relay is working.To check the regulator you need to put a fuel pressure gauge on it to determine what it is and it should be about 2.5-3 bar