How do I test the computer. I have no spark and have changed the distributer cap, rotor & distributer cup. I found a used module (computer) but still no spark . Is there something else? Can I test the module? How

What make , model an year vehicle ? could be ignition control module , coil , PCM - engine computer ! You need to test for battery voltage at the coil , ignition module an is the PCM turning it off an on ? you could go to www.bbbind.com to look at a wiring diagram to see what all is involved in your vehicles ignition system ! pull the distributer cap a crank the engine , does the rotor turn ?

is it getting gass if u got spark to the plug's it should start.dump alittle gas down carb or throttle body making sure to replace air cleaner or snorkle and try and start.if starts could be fuel pump.

check for spark if you do not have spark and thie problem u are having now is the same as original problem it is most likely the ignition module also check to make sure distributer shaft / rotor turns while cranking also check rotor if it is burnt it can cause this also check for moisture under distributer cap if wet spray with brake clean and air dry

if im correct in saying this, i think there is a small cylindrical looking piece with one wire comming out from the front in the distributer under the distributer cap next to the points this is could a condenser you could try changing this for a new one all so check the gape your points make if to small you will get no spark as well if to big

The part is a ' hall effect ' pick-up switch. it hasn't any magnetic properties of it's own. When the nodes on the distributer shaft crosses the switch it induces a slight current in the switch which then sends it to the igntion system to fire the coil. If there was a problem with the switch it would affect all cylinders.

Did you replace the igniter (inside the distributer) and the ignition control module (on top of the distributer. Sometimes the control module gets overlooked...

change the pick up coil inside the distributer under the rotor button.

DId you check your distributer out? Not the Cap but the main distributer itself.

i would say module but havent a clue where it be ,never seen one of these cars before here in spain ,module could be inside distributor or under the coil or mounted somewhere else around the engine compartment

I had the same problem recently but replacing the ignition Coil under the distributor (inside) solved the problem. Also replaced the distributor Cap and rotor at the same time.