If the spark (and timing) are good, it should fire on starting fluid. I'd verify that as a sanity check. Starting fluid can be sprayed into the intake manifold via a vacuum hose connection as an easy shortcut. Starting fluid is magic (Buy extra - makes an excellent, if very dangerous, solvent/cleaner).

There is an old no-start thread from the 'other site' I found very useful: http://www.toyotavanpeople.com/forum...p=60093#p60093

Beyond my depth here, but will offer up for others to correct:
- Make sure whatever state the van is in, air is flowing past the MAF Sensor (MAS, whatever) - and nothing get sprayed in upstream of the MAF - starting fluid being the least harmful exception.
- Checking spark plug (and maybe compression) in #1 cylinder is quick/easy. If you are getting fuel, after a bit of cranking you should likely see/smell gas on plug or in cylinder.

Godspeed.