Richard
For instance. You say when you crank the engine over with the key, you are getting 12 volts at the distributor and a spare plug on one of the wires is sparking, yet the engine does not start. You now get out of the truck leaving the key in the run position and with a screw driver it then starts. You've given no indication that it was starving for fuel earlier and now fuel has been pumped into the carb.
Screwdriver, yes. Fuel not an issue. Most of the time, the truck fires up in a split second. It'll sit all night, I jump in and she fires right up without even giving her gas. A couple months ago when this first started happening, I checked the basics first like fuel and spark.
You have not indicated that the engine cranks faster with the screw driver than with the key.
The motor starts very quickly when jumpering the starter. Doesn't seem faster, seems the same but, hard to tell as it starts up so fast.
Are you now getting 12.5 or maybe 13 volts at the distributor?(from a 12v bat delivering 250 amps to the starter)
Do you mean after the engine has started and is running? If yes, I have 14.42 using Fluke multimeter we have at work and 14.4 using my own.
I am really curious what the readings would be with the starter jumpered out. Suppose I jumper the starter with a push-button switch or something. Turn the key and have someone push the switch while I read out? See if that voltage is being backfed and where it's going?
