Missing

Oh yea when u first start it n the morning its cranks a lil bit then starts. After about 30 second it dies but starts right up not doing it anymore the rest of day. Only on first start of day

I drove it a few miles earlier n noticed when it shifted to 2 it was a lil harder than normal. I don't know what else to do at this point. I've read some things u guys have put about sensors n vac leaks. The ole truck has 285000 on it but doesn't leak fluids or get hot. Seems like the motor is still kinda stout for all those miles. Just can't afford a distributor right now. I thought about going to hardware with my cap screw n getting 1 same size just a touch longer with a locking nut. Would that hold it tight enough to see if it will fix it? Motor seems quite with no noise. Going to get the codes from it n morning. Also when I turn a signal on my voltage meter jumps up n down with signal. Putting new cable ends on tom. Could alternator cause this much trouble

Securing the distributor cap like you describe would be fine. Ask at the parts store if there is a repair for this, I think there is. The cap like this could cause a miss. How are the spark plug wires? Having it scanned for codes is a good idea but I'm sure it would come up with a po300 to po308 code which is a misfire. Here are some other things to check...P0303 CHEVROLET - Cylinder 3 Misfire Detected,,, Possible causes - Faulty spark plug 3 - Clogged or faulty fuel injector 3 - Faulty ignition coil 3 - Fuel injector 3 harness is open or shorted - Fuel injector 3 circuit poor electrical connection - Ignition coil 3 harness is open or shorted - Ignition coil 3 circuit poor electrical connection - Insufficient cylinder 3 compression - Incorrect fuel pressure - Intake air leak

Could be your injectors had the same problem.