Need fuel injector firing order for 95 ford460

What year is the vehicle? Mitsubishi used two different systems on that engine. Before 2006 they used a Fuel Injection Pump and after 2006 they used a Common Rail system.
An injection pump is a mechanical setup that is driven by the timing belt to make sure it matches the engine speed when driving.
A common rail system uses an electronic signal to fire each injector at the correct moment from a shared fuel supply rail on the engine.
In general the injector firing order needs to match the mechanical firing order of the engine so the fuel is injected into the correct cylinder at the correct moment. The Firing order is 1, 3, 4, 2. Number 1 is nearest the engine belts and pulleys.

I would take a closer look at the fuel system and pressure - injectors are very sensitive to the correct needed values (too much or too little causes a lot of problems). I would also vertify the injectors are firing correctly - are you sure you have installed the correct ones?

The firing order will probably be 1, 3, 4, 2. Number 1 being the cylinder closest to the belts and pulleys on the end of the engine.
An injector pump doesn't have a number system. It just supplies fuel to all the injectors and the engine electronics trigger the injectors in the correct order.

there is no need fuel injector go in any port but the firing order is pass side 1,2 3, 4 drivers side 5, 6 ,7 8

I would look towards the ignition module. It is what fires the injectors, you can have spark but a no run situation because of no fuel injectors.

Well if it is flooding, either something is shorting out the injectors and causing them to be wide open, or one injector is stuck open, or you have a pressure regulator leaking liquid fuel into the intake.
Are all of the spark plugs wet ?
Can you start the engine if you disable the injectors ?

check fuel pressure and injector pulse...if everything is working than check the timing and the firing order...if it good than check the engine compression....

Spark plugs, cables, Ignition Control Module, Ignition Coil, in that order.

can u here the fuel pump these trucks r very common for injector spiders going bad i work on them alot and own two if you need an injector spider i got an extra i d be willin to sell e maial me at [email protected] also u can also try to cheek for spark too i have all kinds of knowagle of these 4.3

MAKE SURE YOU HAVE THE WIRES ON THE RIGHT PLUGS.YOU MAY NEED TO GET THE CODES SCANNED TO NARROW DOWN YOUR PROBLEM BUT I THINK IT'S A FIREING ORDER PROBLEM.IF THIS IS NOT THE CASE THEN DO A COMPRESSION TEST ON THE MOTOR TO SEE IF YOU NEED TO GO DEAPER.