Won't be needing a pressure check on that one.  Just remove
the air cleaner and look down the carb while you open the
throttle a couple of times to see if it has fuel.  If it has
fuel and spark, and turns over, a timing light can be used
to see whether the timing is still pretty close.  That will
see whether the timing chain has slipped.  Compression check
would be next.  My 351CJ pulled a stunt like that where the
timing was dead on, it had fuel and spark.  Ran compression
check and found none on back 6 cylinders.  Cam had broken
behind #2 cam bearing.

Lugnut

First thing's first.  When you turn the key, do you hear the starter motor
trying to turn?  If yes...

Does the starter sound like it's spinning freely instead of turning the
crankshaft?  If no...

If you pull a spark plug and have someone turn the key (turn over the
engine), is there spark?  If yes...

Is fuel getting to the carb?  Try spraying some starter flud into the carb.
If the engine starts, but then kills right away, fuel might not be making
it.

Joe