I have a K1500 4.3 Liter. Like many, I started to change plug wires & dist cap but lost track on what went where. V-6. Imagine I am looking clueless forward to the engine. I know the coil location. hee hee
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check high tention coil wire, coil wire going to dist cap with test light, if test light light up, it good also check dist rotor, and if that good might be pick up coil , the module might be bad, let me know what happen Bob
have you tried to clean throttle body out with carb, cleaner. it may have a buldup of carbon or dirt around throttle plate, not letting the plate to close all the way. also check for a vacuum leak in hoses etc.
the H.E.I distributors have a problem with the modules blowing . check you have power in the main power wire to the dist with key on if there is then my guess the module blew / pop the cap off the dist ,remove the rotor , you'll see a half moon looking flat electric box with 2 wires going in ea side change that part and try it there's also a pickup coil /if you can make sure no wires are broken on the pickup coil or change it .hope that helps . sounds like you lost spark and that would be my first guess / the module went :)
The distributor cap and rotor should be changed if this does not help replace the ignition module located within the distributor Headers increase the local temperature near the spark plug boots make sure you have a thick high quality spark plug wire boot surrounding the spark plugs, an old timer trick is to start the truck up cold at night in a dark local and spray the plug wires and dist. cap with a light mist of water to detect any weakness in the ignition wiring, any arc outs see must be adressed.
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.
If there is a pinched wire you will be able to feel/see it. If the dist cap got damaged, then it is possible the distributor got bumped or bent during the changeover. The first thing to do, is check, and recheck that you have all the plugwires at the right places. (18436572) Make sure that your wires are set in this order on the distributor cap. If they arent, then there is your problem. If they are set right, then check your timing. Or have one of your friends come redo the plug wires, and timing from scratch.