M54 no start problem, ideas?

[SBBimmer]

Thanks for the suggestions. I couldn't get to this yesterday because of work. Today I pulled the forward most spark plug out, no sign of oil or fuel on it (put it back and cranked and pulled it out again and still no sign).

I checked for fuel at the rail after I put the new filter in (didn't think to check before). It's there, but i don't know if it's enough. I can borrow a fuel pressure gauge at O'Reilly's, guess I need some way to jump the pump relay to use it because I don't have a helper. Also a problem for testing spark, maybe this weekend.

FWIW the fuel tank is currently 3/4 full so i don't think it could be a siphon issue. I could pull the pump out and check for a crack in the tube that goes to the top of the tank, but it really seems to gush out when I crank with a hose stuck in a bottle.

I guess I could throw a new fuel pump relay in if you think that might be the problem? But like I say, when I crank it gushes so I think the problem must be downstream from there. But maybe that's wrong.