M42 cranks but won't start

[Dj Buttchug]

those need to be changed. Are you sure the engine is getting fuel? I think your fuel pump might be crapped out conveniently when you started working on the car.

[Mohit]

fuel
air
fire
comp
time

what do you not have OP?

I dunno where to start. I tried checking for spark by putting the first spark plug onto the engine and cranking, and I saw blueish sparks. Here's a pic of the spark plug

[Dj Buttchug]

fuel
air
fire
comp
time

what do you not have OP?

[Mohit]

My 91 318is has been running fine since I bought it a year ago, no issues at start up (except the hot start issue that every noob has). On Saturday I jacked the front of the car up to try to install my z3 short shifter, but decided I didn't have enough time, so I let the car down. Didn't start the car until this morning (Monday), and it wouldn't start. Battery is fine, all lights show up, it cranks, but it won't start. It seems like it wants to start, but it just won't catch or something. There wasn't any issues before indicating something was going bad, so I don't know what to do. Here's a video of what it sounds like.

http://www.youtube.com/watch?v=FfqOVKDbvs8