2000 civic d16. Wouldnt start and after inspecting, found that i accidentally plugged a coolant hose into vacuum hose and coolant got into cylinders. Was able to soak up most of it inside cylinder with strings and replaced plugs and oil and got it to start. Problem is, now its smoking white forever. Is it most likely the rings were affected? I did crank it a bit with coolant inside cylinders before finding it which of course caused it not to start in the first place.

 

You would be surprised how much coolant will be trapped in all the little creases, nooks and crevices of the intake system... and some may have even gotten pumped through the engine and is now trapped inside of the exhaust system... I would drive the car for 50 or 100 miles to see if the smoke ultimately stops. The fact that the engine runs at all means that you are lucky... plugging a coolant line into a vacuum port usually causes a "Hydro Lock" situation and the engine is destroyed.

If the smoke doesn't stop... you will either have to rebuild the engine or swap it out for a used one from a salvage yard.