Ok I've had a hard start problem for some time and got around to ordering the check valve,(from germany 2 weeks) from bmw they have giving me the check valve that goes into the fuel pump http://www.realoem.com/bmw/showparts...16&fg=05&hl=20

Number 12

They don't no anything about the in line one

This part has thread on it and is very hard to jam in the fuel line with some boiling water and alot of force it might work in line...But it might be un safe.

Take it back or give it a go.

I have giving them the code 16149068988 and It does not work.

How hard would it be for a very novice to put it in the pump with out screwing it up.
This is my only car And I need It daily