No start '95
Yes, check the gas level.
And read the codes if you can. A Helms manual has lots of advice if you can follow the 'logic' of its organization and find things.
But try the easy stuff first.
PUMP DOESN’T RUN
When you turn the key to 'on' can you hear the fuel pump run?
If not, check the two fuses - or just check the fuses anyway. One is in the fuse panel just inside the passenger door at the end of the dash. It's labeled f.p.1 (I think) and is a 10amp fuse. The other is a 20 amp 'maxifuse' and is located in the 'underhood electrical center'. If either is blown and a new one blows when the ignition is turned on, the fuel pump is likely bad. If both fuses are good and the pump doesn't run, it's likely an open connection or bad pump.
If these fuses are OK and the pump isn't running, it could be the fuel pump relay (located in the relay module below the passenger side dash) or the security system (See UTD if you have a Helms manual). Unlocking a door with the key (you must put the round key in and turn it - even if the door is already open) or inserting the square key into the ignition is supposed to reset the security system so this probably isn't the no-start cause.
FUEL PRESENT AT REGULATOR
If the fuel pump runs and there's fuel and pressure at the regulator, it could be either or both of the injector fuses. I haven't been able to discover where they're located yet and have to run an errand for 'the boss'. Or either the IAC (idle air control) or EGR (exhaust gas recirculator) could be stuck open.
Or if there’s fuel present it could be the MAF or the regulator. Unplugging the MAF (easiest to try) will cause a default condition that should cause the engine to run (if the MAF is bad).
Check the fuel pressure at the regulator after turning the key on then off. Should read about 40psi. If the pressure is really low or drops fast, it's likely the regulator. A bad regulator may also leak. A bad regulator usually causes too low pressure by allowing all the fuel to go back to the tank via the return line. So if the regulator is bad, there will still be plenty of fuel – just low pressure.
NO FUEL AT REGULATOR
If the fuel pump runs when the key is on but there's no fuel, it could be the sock on the pump inlet or the fuel filter. A dirty pump sock or dirty filter will cause low pressure and flow but won’t cause the pressure to drop after the pump stops (like a bad regulator usually does). You can loosen a line to check for fuel but have a rag ready to catch it and don't start a fire.
Changing the filter is cheap but nasty and may have been done with your other maintenance.
Changing either the pump or inlet sock isn’t as bad as it sounds. Take off the gas filler lid and you can see how the inlet is fastened. The pump comes out with it. Be sure to disconnect the battery and avoid igniting the gas during fuel pump and line maintenance.
Good luck.
Seems windy but this is just the tip of the iceberg.