[MT-2500]

Z or W code engine?
TBI injection or MPI ?
Z TBI engine are low pressure with no fuel pressure test ports/scrader valves.
On them best to get a fitting to tap in at fuel filter for a fuel pressure gauge hook up.
The W engine is high pressure and has a scrader valve fitting on left rear engine on in fuel line to test pressure.
A 100 lb gauge and a scrader valve fitting will be needed on it.

If old type dist plugs wire on top the dist has a ign module and a pickup coil in it.

First make sure the dist is turning and rotor is still on no one cylinder TDC compression.
And as Old master said 12 volt ign to coil.
And when checking for spark first test for spark out of coil and if spark there check for spark threw the dist and to each pspark plug.

Auto zone should be able to check/test coil and dist module for you.
Also they rent or loan or sell fuel pressure test gauges.
Or any good tool man or good parts place should have them.

If coil is good most no spark problems is in ign module and sometimes dist pickup coil or dist not turning like a striped dist gear.

On checking for codes on that one you will need a good high end /high dollar engine capable scanner for that year.

Let us know how it goes.
MT