96 chev pickup w 4.3 engine has no spark,new crank sensor,coil,new dist,with cap and roter,and new plug wires,my scanner has rpms reading and i have no codes,???

I saw this link and it has same issue with several solutions.
Some solution check motor ground, damage wiring to distributor/ coil, ecm and crank sensor. One person said he found solution by trouble code even though he had no check engine light on dash.
https://www.cargurus.com/Cars/Discussion-t22082_ds552596

I owned a similar 1986 caddy

12 Volts on pink wire to dist with key on

The top of the cap is the HEI Ignition Coil

Inside dist is the pickup coil (no crank sensor)
& ignition module with the 3 or 4 wires

Maybe the module failed- if you have no spark
at plug wires

Were any of those parts faulty ? Did you test any of them first ?
Since you have replaced the ignition system the next phase would be fuel injectors and mechanical parts.
Have you run a compression test yet ?

You need to make sure the engine is getting gas to your injectors. Now, if the engine is getting gas, you need to make sure you are getting spark. There are many things that can cause a vehicle to not start. Your timing belt/chain may be broken. You could have a bad cam sensor and crank sensor. It may be in the plugs/coils, wires, distributor, dist.cap, roter, ecm. You just need to check each possibility the best you can. Some can be visually inspected and some will need tested. If you have a question, feel free to ask me.

If you are sure they said, a distributer cap a roter and a distributer, there is a problem! Because on a 1998
plymouth, there is no distributer or cap or roter.
Your cam sensor along with the crank sensor-temp sensor and a few other sensors, send a signal to the
powertrain control module, that sends a signal to the
coil pack(that you said was replaced) that fires the
spark plug. I would hold off from having any further
work done there, until you can check out what they
say they have already done. Ask if you can have the
old parts they replaced so far. You will want to have
an OBDII scan test done, to see what codes come up. It should have one of the first tests they did.
If I have read your post correctly, have them write an
estimate for what they will replace next. This info. is
based on the car being a 1998 plymouth and not a
1988 I would not wan't to acuse somone of anything
based on a typo. Hope this helps. Good luck.

REMOVE DIST. CAP AND CRANK ENGINE SEE IF ROTOR TURN IF IT NOT, CHECK TIMING BELT, IF IT TURNS CHECK FOR SPARK ON DIST. CAP WHERE COIL WIRE GOES IF SPARK CHANGE OUT SPARK PLUG WIRES.IF NO SPARK CHECK IGNITION COIL AND PICK UP COIL.

There may be no injector pulse if the computor does not see a RPM signal.
There will be no spark if the ignition module does not see a dist pulse from the dist pickup.......a RPM signal.
Because you do not have both ......I would suggest to check/change the dist pick up.
Follow the wires from the ignition module inside the dist to the pickup which is also inside the dist.
If it is just a bad dist pickup....keep all your old parts as good spares.
Also...is the dist turning? to provide a RPM signal?
You will have to remove the dist to change the pick-up.....mark your timing locations......"rotor position" and "dist body location"before removal.
A quick test before installing the "repaired dist" .....plug it in the the truck wiring and turn on the key....DO NOT CRANK THE ENGINE OR YOU WILL LOSE YOUR DIST ROTOR CORRECT POSITION......as you spin the dist by hand .....the injectors should spray.

Burn It .. Sell It.. Ur stupid for owning it

check the wiring harness at the coil,sometimes that plug will get loose or dirty resulting in a no spark.
The only ign system parts are the crank sensor,cam sensor,dist,dist cap,rotor,spark plugs,wires,and coil,and the ecm which controls all of these,is there a check engine light on?
run a scan tool to check for stored codes or system events stored in the ecm.

If you have a 12 volt test light put the point on the positive lead to
the coil and the ground lead to a good ground ( Negitive side of battery ). Then turn the key on. If the test light comes on then you have power to the coil. With power to the coil confirmed have someone crank the engine and put the test light on the negitive side of the coil. The light should flash at a rapid steady rate. If not then your pickup in the distributor may be bad. If no power to coil with key on or when cranking you may have a bad ignition switch.
Another way to test for spark is to remove the coil wire from the dist cap and hold the end close to a ground ( 1/4 inch away) and
have some one crank the engine. If you get a good spark but no
spark to the spark plugs you may have a cracked dist cap or a bad rotor. If no spark at coil wire use a wire in place of the coil wire to check for spark. You may have a bad coil wire. Good luck. Neil W.