I accidently took the distributor out on a 1992 4 cylinder izzuzu pickup, while doing some mechanic work. How do I put it back on without having to time the whole motor again?

You need to mually spin the crankshaft so that cylinder 1 is at top dead center. This can be done by removing the spark plug in it and have someone watch the hold with a light to see when it gets to the top of the cylinder. Then take the distributor and index the rotor to the position that is for cylinder 1 and reinstall the distributor.

when it stops running need to check for fuel and spark

If fuel is getting to the cylinders than the pickup coil inside the distributor is good and the most likely problem Is the ignition module on the side of the distributor has gone bad. Most of the time, especially with the four cylinders, the distributor needs to be turned in order to gain access to the two bolts that hold the module to the distributor. Make sure you mark the base of the distributor before turning it so that it can be put back in the same exact position. They make a special ford module tool just for these. It will have a torx bit on one end and a thin wall socket on the other. The tool will make this project much easier and well worth the investment. Your local parts store should have them on the shelf. If you have any questions let me know. Thank you for using fixya.com.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

check converter , maybe clogged , the fuel filter under the hood been changed? if light won't come on its fuel related, pump maybe going bad check pressure .

Hi, your diagram is below. Also threw in the timing marks. Not sure how hard it is to get the top cover off the timing chain as I have not worked on this engine. If you could get a peek at those timing marks you could verify valve timing. Let me know if you have more questions, and thanks for using FixYa.

Did you take out the ENTIRE Distributor or just the cap?

If you took out the entire Distributor, and put it back in, there is a possibility that you put it in backwards. The bottom of the Distributor has a 'notch' in it. If you turn it 180 degrees the wrong way, and put it back in, your truck will not start, because it is in effect 180 degrees out of alignment with the timing.

If you only took out the cap, refer to your owners manual (Hanes is best) for the plug wire placement in reference to the firing order, and make sure all the plug wires are in the correct locations. Also, make sure your plug wires are seated all the way down onto the plugs, and the cap is secured tightly onto the base of the Distributor.

Make sure your Coil Wires are also seated properly to the coil and the Distributor.

Clean the battery connections. Remove the battery connections, clean them and reinstall.

the cap will usually have number one stamped on it. It rotates clockwise. If is a four cylinder the firing order is 1-3-4-2.If 6 cylinder 1- 6- 5- 4- 3 -2. If six cylinder 1-3-5 driverside Pass side 2-4-6

I is the timing chain inside the engine rubbing on the cover houseing. You need to have the chain or tensioner replaced or both
Mike

firing order is casted in intske manifold.

Sounds 180 degrees out. Move flywheel to top dead center. Remove timing belt and turn flywheel pulley ONE complete turn to top dead center. Then put timing belt back on with marks lined up.