Engine stopped running fuel level 50% new fuel filter seems to be no spark ...1991 Ford Telstar TX5 5 speed manual ( unable to find listing for telstar tx5 was told they are mazda 626 in usa )

Try free manuals for you.

Yes, a very clogged fuel filter could cause that. A fuel pump going bad could cause that as well.

Dirty fuel filter and air,dirty throttle body,next IAC sensor.

try a full tune up yet.
you know, the LISTED spark parts and all filters.
this decade.
ever to the Full 60k list?
what engine, no engine stated, there are many.
we can fix misfiring car bodies, only engines.

misfire, can cause by over 50 things.
even a bad spark plug. if gas engine.

Is it carburetor or injection? It is usually mounted on the firewall, depending on the engine layout. Need more info as these cars come with a huge variety of engines.

the egr on most cars , is a 50k mile service point (cleaning)
ever do the 60k mile tuneup (service sch. list? )?
if tuned up (spark parts, (list) all filters )
then it can be ? EGR sticking open, love to do that just before a stop sign, is its hallmark of messup.
So is the ISC (idle speed contr. valve,electric) this stick , yes clean it.
barring that..
with all otto cycle engine, there are 3 simple paths.
1: good engine, (some fail hot only)
2: good spark (yes, tuneup deal)
3: bad fueling, yes, as you said, too lean or too rich.
if the engine is good, (compression good)
and the tuneup gives you good spark and good timing.
we land on bad fueling , in that order.
going backwards can result is 3 weekends shot.

so fueling, Ill pretend its fueling and that 1 and 2 are ok.
in the service manual they cover this with tests.
Is the check engine lamp on key on the goes out running,
if not, why not connect a scan tool, (USA answers, all mine)
In canada , the EGR and other errors (misfire) are ignored by the ECU (no CEL warning) so not posting country puts me in hand cuffs.
fueling.
1: remove spark plugs. are the they soaked in fuel, 1 or all.?
2: if dry , good.
if wet , check for bad injector rates and root cause.
if dry. then you need a scan tool to see if 2 things are good.
1: engine idles hot, in closed loop, if not fix that.
2: light fast cruise, (no hill) does ECU hold Closed loop status.?
3: if those are ok, does the LTFT say near center.
most cars run -4% not -25+ or +25%
LTFT means long term fuel trim.
when running look for pending errors. and live errors and stored errors, they are called DTCs

Drive-ablity issues are the most complex , just before intermittent.
huge books exist on topic.

here is one more of the many,(misfire )
induction air leaks
what we call this is gathering evidence. (after the tuneup)

Sounds like a lean fuel condition, did you check the fuel regulator, thats pretty common on older vehicles, it might be dumping too much fuel judging by your blackend plugs. Also should stop using fuels with ETHANOL, the **** ruins fuel systems, just ask anyone.............

Is the spark plugs getting spark? Is it getting fuel?

if the exhaust blows black when this issue starts,then probably a bad regulator,which the check engine light will come on then go off a few times telling you a code,oxygen sensors...if not,try replacing the throttle position sensor,its tough because its at the bottom of the throttle body,and the screws rust in and sometimes breaks,so the throttle body has to come off.you have to figure out where the gas smell is coming from at least,it could be blowing back into the air breather.also check the vacumn lines(green hose and red hose) on top for cracks.the red should be for the regulator

start with a tune up, (air filter ,spark plugs, plug wires ext)..adjust carborater(air fuel mixture could be off)