have tried a 50 ft snake and drain cleaner's twice.while the snake is still inside the pipe,moderate draining happens(for like 10 minutes) but when i take out the snake and test it,it revert back to a slow drain.why is this so?mine is a mobile house model.have tried the cleaning process twice.can somebody suggest?
notes-1.vacuum breaker is working alright.2.there is not much trace of grease and dirt at the tip of the snake. 3.all the other drain lines are ok.