I have a 92 camry 4cyl. Won't fire at the sparkplug. Replaced plug wires and plugs, distributor, igniter and still won't fire. Any suggestions?

Did not say if you have seen sparks from the sparks plug wires. Then there is the electronic igniter?

1. The ignition system on your 5.0L uses a distributor type system and will include the following components:
   1. Ignition control module (ICM). Depending on the year of your specific Ford, it'll have a inner-fender mounted ignition control module or a distributor mounted ignition control module. hot sure which you have.
   2. Ignition coil. you replaced it.
   3. PIP (Profile Ignition Pickup) sensor. This is Ford's name for the crank sensor and is mounted inside the distributor. The most common name for this component is the pick up coil.
   4. Distributor cap and rotor. you replaced
   5. Spark plug wires. you replaced.
2. The thing to keep in mind about the ignition system is that all engine cylinders must get spark and the one thing that will stop the ignition system from creating spark on a wholesale scale is a BAD crank sensor.Have you pulled a plug then using some insulated pliers grounded it to the vehicle and turned it over to see if you have spark, that'll tell you alot.takes two people of course.Best of luck and hope this helps.

how much is the RPM showing in the datatlogger while cranking?

You will need to check for spark disconnect a sparkplug wire at the distributor and leave a 1/4 air gap,crank the engine, do you see a spark,if you have spark then solve for no fuel this can stem from a needed fuel pump that has failed.

The next time it won't start ,pull a sparkplug wire and see if you're getting fire.Then we'll known whether its a ignition or fuel problem and go from there.

You have problem with you timing or did you ever label all the high tension wire before you unplug it. it might be re arrange the firing sequence. 1342 firing order. And the timing position of the distributor were at original place.

Check for spark at any of the sparkplugs.If there is no spark at the plug then replace the distributor ignition pickup coil.

you said you repl dist cap that means you don't have a crank sensor you have electronic ing module. remove your elec ing module have it tested most auto parts stores could test your module, or check your coil at the neg terminal. should have power. if not you lost your primary volt from your batt.your secondary power is coming from your electronic ing module from the module to the pos terminal on the coil, when the eng cranks,from the coil to the dist cap , from the dist cap center to the rotor then out to the plugs,this all happen pervided the timing belt or timing chain is ok. the cumbustion chainber needs 3 things , thats fuel, air, and spark.

SPARK PLUGS IN THE CYLINDER HEAD.FOLLOW SPARK PLUGS WIRES.THEY WILL LEAD YOU TO THEM.BE SURE CHANGE PLUG WIRES DISTRIBUTOR CAP AND ROTOR IF EQUIPPED.SOME MODELS HAD DISTRIBUTORLESS IGNITION SYSTEM.

Under the intake manifold there is a ignition coil power switch that you might try . See http://www.myisuzuparts.com/showparts.php fig no. 0-60 image number 4 item 352