Engine turns over. Won't fire. Can smell fuel

Possible leaky fuel injector/regulator/fuel line. Possible disconnected/loose fuel purge/vent line. Possible leaky fuel filler tube or fuel tank. You will need to have the fuel system/lines inspected to determine source of smell. Not something I would put off as a major leak could develop and spill fuel on hot engine/exhaust causing fire

I'm not sure you would smell a fuel leak from the tank while driving, the tank is located to the rear of the cab, under the bed on the driver's side, you may however have a leak in or near the engine compartment. If this is the case, yes a fire is possible. If you smell fuel when you come to a stop, it may be your fuel cannister, or vent lines are leaking which should trigger a check engine light.
While the engine is running, Check the fuel rails and schrader valves on both sides of the engine manifold for leaks. You can also turn the key to the "RUN" position (do not start the engine.) this will cycle the fuel pump to run for a few seconds to pressurize the fuel system, and you can then check for a fuel leak.
I hope this is helpful to you.

I would say the miss is due to excessive fuel, not excessive fuel due to the miss.
Is the check engine light on ?

Don't know why you would expect to smell gas

Could be the fuel pump

I would guess that one or more of the spark plugs, or spark plug (high tension leads) have failed. That would cause the engine to run uneven , off balance,and create fuel vapours due to unburned fuel.

Worse case scenario it could be leak on fuel injectors or fuel line, if possible have some turn engine over with hood open, if you can see or smell fresh fuel, get professional assistance as this is a extreme fire hazard.

The first thing I would check is fuel pressure. This type of fuel injection requires a minimum fuel pressure in order to operate. If fuel pressure is as little as one psi below minimum the vehicle will not start. You can try squirting a couple of shots of carb spray into the air snorkel while somebody cranks the engine over. If the engine starts and then dies you now you fpdeffinetely have a fuel issue. If the engine still won't start check for spark. Let me know what you find. Let me know if you have any questions and I'll do my best to answer them. Thank you for using FixYa.com!

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

If the engine won't fire up, but your starter turns over, you may want to check your timing unless you have a check engine light on. If the CEL light is on, have the codes scanned.

If the engine won't turn over with the starter or it clicks, have your battery tested at autozone or advanced auto parts. Replace the battery if it is bad. Else, have your starter tested.

If the engine still won't turn over and the battery and starter are tested fine, you may have a blown fuse, bad ignition switch, or a failed relay.

If the engine fires up but randomly dies and starts back up, you either have a failed sensor, failing fuel pump, clogged fuel filter, bad plugs or wires, or a failing ECU.

I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

try some starting fluid (either).

Inspect the wiring at the fuel pump (if not in the tank).

Alternately, have the psi tested on the fuel line.

Are you certain there is enough fuel and the car is not uneven (as on a hill preventing a low fuel availability to get to the fuel pump to pump such that it can pump the fuel?)

Another stupid question - have you looked at any of your sensors -- such as the crankshaft positioning sensor?

This should give you a couple ideas anyway..
Best regards
Ck

engines need 3 things to start (petrol engine)
fuel, air and a spark,
as you have been working on your fuel system it is best to suspect this system first,
on engine turn over see if you can smell fuel at the exhaust.
if you smell fuel the fuel regulation mybe too high and the engine is flooding.
if you do not smell fuel, remove fuel line from engine and ensure fuel is getting to the engine,
(be careful not to let fuel spill this generates a fire risk)..
once fuel is getting to the engine, check your ignition system to ensure you have a good spark to ignite the fuel.
finally check your air filter is not blocked and that you have air getting to the engine.

I hope this was helpful.