Increase production quickly

Stems from old coal burning, steam engines, where the coalmen had to shovel coal into the burner to keep the train running. The more coals the bigger the fire, the faster the train could go.
General Motors is pouring on the coals in the development of hybrid vehicles over the last couple of years
by anonymous2zx2 October 23, 2006
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To give maximum effort or energy to an event.

To make love with added energy.

To make an engine give its maximum performance.

The train conductor decided to pour the coal to the engine when he went up the hill.
When I saw Sandy last night, I didn't just (make love). I spent 3 hours pouring the coal to her. I had not seen her in weeks!

I made it here in less than an hour. I was pouring the coal to that car.

The engineer wanted to pull more cars, so he told the conductor to start pouring the coal.
by Army Medic September 13, 2013
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This means you just humped the holy shit out of your old lady
Bob: You look a little wore out today bud.
Eric: Yeah, I fuckin had to pour the coals the the little miss last night.
by 6sleezy9 June 6, 2007
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Derived from the days of Coal steamers, literally means to add more coal to the fire which would increase available engine power.

Used now-a-days by Pilots amongst others.
"Looks like we're coming in high, better pour the coals to her and overshoot!"
by Iwallis November 23, 2011
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An old saying from when ships were powered by coal fired boilers. When the captain wanted full speed he'd call down to the boiler room and the master stoker would call out for everyone to "Pour to coals to her" - literally to feed more coal to her (ships are always female). The saying became synonymous with “giving it your all” and to accelerate as fast as you can.
by Goodbye_Charlie September 22, 2010
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