I have used drain opener on the drainpipe several time w/o success. I have augered the pipe as best I can with my 20ft snake.I have flushed the pipe using the cold water hose ,it flushed w/o diff and no back flow.I have repositioned the hose coming from the washer pressed it in the drain further made it real snug,water didn't come back out initially ,but suds flowed from the pipe . I've pulled the hose back farther so the hose is just sitting in the drain still I have back flow. I had a plumber come out about 3yrs ago to auger the drain with his 75ft snake. The back flow stopped for a while then started back up.I've just tolerated it until now. The plumber at the time told me a noisy drain is a good drain. Well,the drain makes plenty of noise until it starts to back flow... any other suggestions

Have the line snaked out again. The clog is likely where the washer drain connects with the kitchen sink drain.

"a noisy drain is a good drain." you have a plumber with a goofed up view of how traps and vents work. Do what Doug suggests. Is this a new washer and how large is that drain pipe, 1.5"?