I recently replaced many things on the engine; after I blew the headgasket and decided to just replace everything that was worn rather than the headgasket alone.
went in and swapped out:
-hoses
-spark plugs
-fuel injectors
-gaskets
-fuel filter
-oil filter
-oil
-valve cover
-distributor and cap

The problem Im having now is that the engine cranks but will not start:


A few mechanically inclined friends of mine tell me that the timing is off.

Ive watched a few videos on how to do this on other vehicles but if there are pages on it in the service manual they are missing (my manual is in pieces)
is there anything special I should know on this van?
or can someone give me a run down of how theyve done the process?