1990 240sx - Replaced Oil Pump - Now car wont crank?

[Morpheus]

NEVERMIND - I painfully found a step I omitted in my hurry - Didn't turn the engine to TDC or mark the rotor - So I am off to reset the timing.

As the title says - I replaced the oil pump today and now it won't crank. It turns over, tries to start, but then just continues to turn over (like it's out of time?).

My question is, could the timing have jumped when the pump went out?If so, how hard is it to replace?

Thanks for your help!

PS - the car is bone stock.
Modified by Morpheus at 2:16 PM 3/16/2008