If you hook up a pair of 12 volt batteries in parallel (pos to pos, and neg to neg) - yes - you will get higher cranking voltage and it might work better. I'd wonder why you need to do this though? Pitted contacts inside the solenoid-switch? Bad connections? Too much valve clearance stopping the ACR from working on the camshaft?
One 12 volt battery will usually crank the starter at 9 to 10 volts. 12 volt starters are designed to work at 9 volts. If you use two batteries, the voltage drop will be less and it could gain a volt and crank at 11. That 1 volt makes a big difference. Of course, if your connections/cables are bad, doubling batteries in parallel won't help.
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Today's Featured Article - Show Coverage: Godfrey, Illinois Country Days - by Cindy Ladage. Except for last fourth of July's Old Gold show in Springfield, Illinois, I don't remember when it was so hot. Nevertheless, the heat didn't keep vendors and visitors alike from enjoying the third annual Country Day's Event. Jane Elliott said the event was originally a one man show. "Barry Seiler, owner of Country Town Farm Supply store used to invite people up to the Johne Deere store. He would give hats and a free meal for everyone that brings a tractor." Elliott said while this
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