I have a 92 geo storm and it jerks really bad when im driving it it stalls at lights and i can smell fuel really bad

Question edited for clarity, punctuation and spelling.

There are lots of ideas here, but due to the fact you can smell gas, clean the Throttle Body with spray cleaner. It isn't shutting properly. Clean the MAF (Mass Air Fuel) sensor as well.

https://www.cargurus.ca/Cars/Discussion-t24292_ds857944

Lots more here

https://www.google.com/search?q=2003+Nissan+Murano+stalling+and+jerking

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additive? for what reason, for stalling? or just for fun added.
you didnt say.?????
if it was for bad running, did you read the container, ?
and add the correct amount on a full tank of fuel, if not , then you may have added too much, some additives are very bad,
next time use Techron fuel additive, (if you feel compelled)
if the car runs bad no fresh fuel, and all 4 sparks are fouled.
no additive is best. fouled sparks are from other reasons.
50 reasons. and not one is cured by magic in a bottle.
I run Chevron fuel in my car, so adding more benzene is of no help
ever.
you said plugs, that to me means, (????)_all 4 are fouled.
4 plugs changed, where they spec type spark plugs, J plugs.
and were the gapped to Geo Storm spec.
if new plugs foul? that means (all 4?) means its running rich.
top reason for rich are:
1: thermostat missing or stuck open (engine never reaches normal temp)
2: Sensors reading wrong,
The Check engine lamp, what does it do.?
Is CEL light glowing key on,. then out after starting, (no? then pull the DTC codes and read the problem)
too high fuel pressure, ask your mech to measure that. or DIY.
ECU stuck in limphome mode. check DTC codes for reason.
Dead , bad or weak sensors.
leaking injectors
Ask any ASE mechanic, to just diagnose the problem.
then you have your answer. but many shops never seen a GEO ever
and have no documentation. on these.
how ever alldata dot com has it.

For the age of this car it is a combination of both the fuel filter and pump, i owned one several years ago and found that the gas tanks are prone to rust inside, if you have replaced the pump and filter you may want to drop the tank again and check the screen on the pump if it is brown you have rust in the tank: another problem i had ( if you bought an oem pump ) they tend to slip out of position, you can tie the pump it place so it doesn't move......

my geo storm shut down on me while driving and it wouldnt start again and i had it towed home to find out that the timing belt snapped!! And another time it shut down was my alternator went out and it ran my battery dead!! Hope this helps you,good luck!!

get a multi-metor and check the egnition system. Distributor could be worn(could have saved my self lots $$$).

Sounds like a fuel filter is clogged or a very weak fuel pump. Filter can be picked up at local auto parts store. Located underneath the car on the inside of the driver side frame rail usually.

sounds like a faulty secondary air system or cannister fault.
Check the air cannister and/or charcoal cannister for damage.
Check for damaged or burst air hoses.

When you say "fixed", do you mean that you put the new belt on it?
If so, you probably missed a tooth in the belt placement. This usually happens when you wrap the wrong way during the procedure and the marks don't end up lining up.
Also check for other things like pinched wires or something disconnected that didn't get put back in the right spot. (vacuum lines?)

fuel regulator on my tracker was a problemits right on the engine fuel rail towards the front

If the cat was doing anything, it would smell like rotten eggs.
If you have raw gas smell, use caution; you have a leak somewhere in your fuel delivery and you could see flames eventually.