I have 3 toilets. One in the basement and 2 on the main floor. One on the main floor flushes good every other time. I snaked it and had the septic pumped out. Could it be a clogged vent pipe?

Could it be a clogged vent pipe? do you hear any gurgles from any other fixtures when you flush?
Tell me more about this flush problem. When it doesn't flush right does the water will rise to the top, swirl around and slowly drain down? Let me know, Tom

Thank you for your response I found the problem. Over the years one of the spring bolts had loosened

Glad you're fixed up. Thanks for the update. Tom

Glad you're fixed up. Thanks for the update. Tom

NO sorry Tom I posted that wrong. That was a problem with my washing machine. Still a problem with toilet. It flushed just like you described. Still learning how to navigate this web site!

I have one that most repair plumbers miss.. Look down at the bottom of the bowl. If there is a small hole, then that is a jet that starts the syphon action. If it's clogged the water will just swirl around and slowly go down leaving solids behind. Take your finger,(UGH! ) and run it around the inside of the opening. Over the years minerals build up and cut down on the syphon (flush) action. If it is rough or you feel build up, take a table knife and put a bend in it to get around the curve in the bowl and chip and scrap it clear. Next take a coathanger and clear out the holes around the rim. They start the swirling action. And last, check the water level in the tank. It should be 1/2" below the top of the over flow tube. And speaking of the overflow tube, Make sure the small 1/8" tube from the ballcock to the white overflow tube is connected so it discharges in it and that it's flowing when the ballcock fills. This is what raises the water level in the bowl. For a good solid flush they all have to work together. Hope this helps. Good luck, Tom

If you can't unclog a toilet with a plunger and 3 buckets of water poured in after plunging, then hope you have a snake. It gets a lot more labor intensive after that.

Still a problem with toilet. It flushed just like you described.
Ta;aman. Go back and eread the posts. This is NOT a clog. Toim