I've got a 1991 S10 blazer 4.3l v6 (tbi) that will turn over, has spark and fuel going to the engine.. but won't run on it's own. Replaced plugs, wires, coil, ignition module, ignition pickup coil in distributor, cap, rotor. Wires are in the correct order on the cap. It will sound like it wants to run, but never gets going. I've been able to move the distributor around and get it to do nothing, then move it some more, backfire, move it some more, and then occasionally fire on it's own.. but never get going. ECM only reads code 12.
I had originally just wanted to replace the cap and rotor, but after taking those parts off, I noticed the wire to the coil was bad and had been arcing. So I replaced all the wires, the coil, cap, rotor, and plugs as well. I was able to start it up, and then moved it from the work area to the street where it's normally parked. I come back out a few days later and it won't start. I ended up checking the pickup coil, and it was open. Replaced that, still didn't work. Replaced the ignition module, still nothing new.. Keep in mind, replacing the pickup coil requires disassembling the distributor. I marked the drive gear in relation to the rotor so it SHOULD be back together properly..
What else can I check? Do I have the distributor put in incorrectly (rotor pointing the wrong direction)? Ideas? Thanks for any help guys!