Partially flushing toilet
I have one of the old huge capacity (7 gal?) toilet tanks and have lived with it for 17 years. Over the past year I've had a problem with incomplete flushing about every other flush. If, after one of the incomplete flushes, I flush again after the tank has refilled, it works like a charm. I replaced the tank inner workings but it had no effect. What in the world is causing this?