The toilet is flushing slow, even holding handle down doesn't get a complete empty. I plunged and snaked and found no blockage at the toilet.
The line is 20 feet. Picture a straight line in back yard, right to left. At the right is some kind of pipe at ground level outside and no visible way to open it. 12 feet left is the tub, another 3 feet left is the kitchen and bath sinks, back to back, and 3 feet to the left of the sinks is the toilet. Between the sinks and toilet, under the kitchen sink is the hectogonal clean-out valve (something to turn with a pipe wrench).
I ran kitchen water but it might miss the problem if it is between the toilet and the sink. The only thing running slow is the toilet. The tub and sinks are working fine.
Should I open the clean out valve with a pipe wrench under the sink which is between the sink drain but after the toilet (note to self: buy pipe wrench) and snake?
Or, should I remove the toilet and attempt to snake through that opening?
Any suggestions?