1987 Plymouth Voyager Wont start

Hello, I'd probably give it a tune-up, check all the fluids, change the oil and filter, before I even cranked it.

Have you done any basic testing? Have a helper crank it while you check for spark at the plugs. Plenty of spark, check fuel pressure. Can you check for troublecodes? You turn the key just till dash lites come on, no further, cycle the key on--off, on--off, on then the check engine lite starts flashing, you count the flashes to get the codes.