Originally Posted by coachdavis
I am new to working on older vehicles and i just bought my first jeep. a 1977 CJ-5 - It has athe 304 V8 with a 3 speed transmission. The guy i bought it from put in a fuel-cutoff switch that you have to turn on in order for it to start. I was not familiar with these and i accidentally left it in the ON position overnight. Now i am getting nothing when i turn the key. Did it flood the engine? kill the battery? How do I get my jeep running again!?? - Cole in Wichita, KS
You killed the battery. Just give a charge, it should start back up. Don't do it again in the future as you'll kill the battery quickly after a couple complete discharges.
An electric pumps uses quite a bit of power even with everything else off its enough to kill the battery in a couple hours.