back flush the lines
simply turn off the water to the water heater....
open the drain on teh bottom of the heater and let it drain out
go to the kitchen faucet and stop up the areator with
someting like tissue paper ,,,
then turn on the cold water and hot water at the same time
if you have plugged up the faucet well
the cold water will flush back through the hot
pipes and blow back the junk into the water heater.....
turn it off and on a few times,
possibly bang the hot pipes under the sink
and after a few minutes it should be back flushed out ok....
then put everything back the way it was and see what happens...
