I changed out all 4 spark plugs with new. (one of the old ones had a smaller gap than the others) and now the motor fired up and is running more smooth than it has for a while. The plugs were only two months old and were taken out and wire brushed last month.
When I pulled the head off two months ago, I replaced the radiator as well as ran blue devil through the engine. This put a clog is the heater core coolant line and caused it to blow. I washed out the heater and replaced the coolant line. The lines to the radiator are in good condition and the thermostat is new after the blue devil. I will check the LP line into the truck for leaks.
Do you know at what voltage the alternator should be charging the battery? My battery says:
12.5 standing
10.5v starting
12.35v running Idle
12.35v running throttle up
12.35v with heater, lights, etc.
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