Jim Morrice
: : sounds like a lack of vent problem, back pressure from flushed water causing air to bubble back. try disconnecting the lavatory drain trap and flushing toilet.: Thank you both for the quick replies. The house is 10 years old and the builder isnt active in my area any more. I cant totally eliminate the sink trap from the system due to an inadvertant up and down run of pipe inside a wall which creates a second trap.: If I can live with the curious bubbles, is there any hazard or sanitary reason why I cant leave it as is? The flushing action appears satisfactory, would it improve dramatically if I rectified the vent? Any chance of toilet waste coming up the sink or shower?: Thanks for your patience. :-)I cant forsee any hazard or sanitary reason for worry. you may get a little sewer gas odor from the bubbles as time goes by. this problem in itself shouldt cause back up. the reason I suggested removing the trap was to open that line as a vent to test flushing. you might try a wet vac. to clear line and then test flush to seee if its worthwhile to proceed with rectifing the vent. I get a java scrip error on the bulletin board so this will be my last post this month until whatever post causing it scrolls off. if you have any other questions, e-mail me.
