I have a 1994 BMW 540I. I changed the Intake Manifold Gaskets,EGR valve,EGR gasket and the two fuel lines. My vehicle will start but it cuts off immediately. I did not have this problem prior to changing the parts. I replaced the fuel pump,fuel filters, and the oxygen sensors approximately nine months ago. My vehicle acts like it's out of gas but it's not. Can any of you guys help me? Thanks in advance!