It getting gas and spark and will not fire

cranks fast? and battery fully charged is the WAY!
Getting gas means, what? how done, ? the dribble test?
FIRE,, what is fire, spark good on all cylinders? tested.
FIre takes 3 things,good compression ,spark then fuel
or no Combustion FIRE.3 things.
no engine told and is an engine question, 3.0L or3.8L?
3.8L V6 I guess and answer now. has 3 sets of dual spark coil packs
that must never be wired up (HV) wrong as many do.
new wire sets plugs are best never this old ever.

push rod valves, cam in block.
connected new battery up backwards or charger up backwards, blows up very expensive electronics.
here is the otto cycle tests, (technolgy)
engine good, compression 150psi up and near equal all.
spark good to all cylinders, tested good.
if get this far, test fuel works for 3 seconds or more.(spray starter)
fuel is last.
3.8L (VIN L, 1 And K) Engine code not told or RPO list 3.8L (VIN B and 3) Engines Firing Order:
the coil wiring is not the same on both engines.
no VIN told
vin B or 3 here
rule 1 replace parts 1 by 1, never in pairs or more or get lost and need this drawing or t he L,1,k) drawing cure that.
test spark 1 by 1. there are 3 coils , firing in wasted spark MODE.

Could be timing problem , timing belt or chain . The spark isn't happen at the right time . What make , model , year vehicle ? Engine size. The coil fire's when turned on by the PCM/ECM - engine computer , PCM/ECM knows by input from the crankshaft position sensor .

Only two things can cause this (1) not getting gas and or (2) not getting spark.
Have someone crank while you hold spark plug wire just of off spark plug, if you see spark from wire too motor block then put a little gas into carb and see if it fires if it fires then look for a gas line or gas tank problem.

Did you check for spark at more than one or two spark plugs? The spark is there, and the spark plugs are wet with gas? Is it flooded? Or is it getting too much gas? For a flooded engine, you know to open the intake valve wide open by holding the gas pedal to the floor, and cranking for up to 15 seconds? This will let a lot of air in and clear out most of the excess gas. Or have you tried this already?
Spark, gas, and compression: that is all that the cylinders need to run. In a well-timed engine, that is. A little gas/air mixture, then compression, then a spark is delivered and it runs. One of those three things is not right or missing for your engine not to start. Or you will have to recheck timing.

Depending upon your level of expertise I would say pull a spark plug and look for a spark.

Any gas combustion engine requires a fuel mixture and spark to "fire" If you know your spark plugs are firing, then the problem is most likely going to be fuel flow.

If it doesn't fire AT ALL. and you are sure you have a good spark, then its probably going to be a computer controlled fuel flow issue.

Are you getting any "service engine soon" lights? Got a really good charge on the battery? Is the engine cold like below freezing? And I gotta ask.... are your sure there is enough gas in the tank? If its low and sitting on a hill its possible its not getting any gas.

Are you certain it's getting gas, does it smell flooded?
Pull one of the plugs, see if its wet after cranking.
Ground plug and check for spark, if no spark, problem could be crank sensor or coil packs.

If it has fuel, spark and compression it has to fire even if it won't start did it jump timing? the belt or timing chain it would still backfire. Have a fire extinguisher
handy After you crank the engine put a rag over the schrader valve and push the pin down like on a bike tire gas will shoot into the rag if it doesn't you are not getting fuel. pick up an inline spark checker and see if it sparks every time the engine cranks over

(THERE,S NUMBEROUS WAYS WHY IT WILL NOT CRANK ) NO1 CHECK TO SEE IF IT,S GETTING GAS , THERE,S A PRESSURE RELEASE VALVE LOOKS LIKE A TIRE STEAM WITH A BLACK CAP ON IT PRESS IT IN WITH PHILLIP SCREW DRIVER AND IF THE GAS SHOOT OUT IT,S GETTING GAS ) NO.2 TAKE A OLD SPARK PLUG ,DISCONNECT ONE OF YOUR SPARK WIRES AND CONNECT TO THE LOOSE SPARK AND TURN THE CAR OVER TO SEE IF IT,S GETTING FIRE ,AND IF IT,S NOT GETTING FIRE TO THE PLUGS IT,S YOUR CRANK POSTION SENSOR ,AND IF IT,S GETTING FIRE TO THE PLUGS . TAKE A TEST LIGHT WITH THE SWITCH TURN TO ON AND IF IT LIGHTS UP THAT MEAN THE CRANK POSTION SENOR IS WORKING ,BUT IF YOU ARE GETTING FIRE FROM ALL OVER THERE,S ONE THING TO CHECK AND THATS YOUR DISTRUBATOR ,STICK THE TEST LIGHT IN WHERE ONE OF THE SPARK WIRES ARE AT AND IF IT LIGHT,S UP THE DISTRUBATOR IS BAD ,AND JUST REPLACE IT ,OR CHECK FOR YOUR FUSE RELAY TO YOUR FUEL PUMP AND THAT SHOULD DO IT

I don't have enough info to give you a specific answer so I've listed a bunch of possible problem that could cause your engine to roll over but not start.
Check the battery and connections, a weak battery or bad connections can cause a weak spark and stop the engine from firing.
Fuel pump or fuel filter, low gas pressure can cause to lean of a air/fuel mixture for the engine to start.
Bad gas, old gas or water in the gas can stop the engine from firing.
Bad or fouled spark plugs, could be caused by bad gas.
Ignition wiring problems, can cause weak or unreliable spark.
Bad, poorly connected or misconnected spark plug wires. Even 2 wire out of order can stop the engine from firing.
Oily spark plug wires, can cause the spark to fire at the wrong cylinder or misfire.
Worn, damaged or wet ignition components.

the distributor pickup coil is failing replace the distributor