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They will definitely spark only if they are connected incorrectly meaning one car you put black on black red on red and the other car you put red on black and black on red a BIG NO NO

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Q: What would make jumper cables spark and smoke?
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Why would a car stall after you take the jumper cables off after starting it?

Alternator is defective.


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In the ground I would think, try a car battery and jumper cables and two rods then digbthe rods in the ground hook up jumper cables and see worms pop up when you see the worm unhook the cables be safe


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The batteries would get very hot, the cables might be set on fire and the metal screen could get so hot it might melt. This experiment is likely to be dangerous so don't do it! There is no reason for anyone to want to trash a good pair of jumper cables and a metal screen this way...


How can you make a car without a battery move?

If your car has a battery and it's dead, you can call a friend who has some jumper cables. You can hook the jumper cables up to his battery and your car's battery. It should create electricity that will renew your battery. If your car does not have a battery, you would have to push it or get it towed.


Will a bad alternator cause new spark plugs to smoke?

Spark plugs don't smoke. A bad alternator would cause a dead battery.


What would make the jumper cables spark and smoke if you just replaced the trans in a 85 C-10 no problems yesterday but this morning you had no power and you can't jump it because of the cables?

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Sounds like you need a new battery that works.