Hope you can benefit from my frustrating experience:

The van would cough but not start.
-Checked that I had spark
-Checked that I had fuel
-Checked that the Idle Stabilizer valve buzzed
-Checked with Darrell Boehler's Digitool that all electrical were correct

Found a broken wire at the coil, fixed it, but it STILL DID NOT START

-Checked the fuel pump (funny shouldn't it vibrate when it first pumps up?)
-Recheck the fuel pressure (pressure but shouldn't it squirt in my eye?)
-Check the plugs (seem ok but put in new ones anyway) - STILL NO START
-Check all grounds, clean all contacts (I'm about to give up soon)
-put my finger on the two fuel pump relays (hey, only one clicked)

INSTALL NEW FUEL PUMP RELAYS
THE ENGINE STARTS AND RUNS LIKE A DREAM

-Larry
'86 Syncro Westfalia