partially blocked toilet drain - using a pressure washer to clear?

ablelocks

have a downstairs toilet that is partially blocked - when flushed, water rises in the bowl but does drain more slowly than usual, but still relatively quick, back to normal level in bowl. have used vinegar/soda and chemical solutions with hot water to try and clear it, and a couple of times it seems to have worked, but then resumes the rise and slower drain cycle again. Haven't previously had an issue with it over the last number of years. Septic tank was done this time last year so that shouldn't be even half full yet.

I have a karcher pressure washer with pipe cleaning attachment so was going to use that this afternoon - any advice or tips would be appreciated.

Am i better off to start at the toilet bowl or start at the drain access point which is about 8 meters from the toilet - it's a connector where 2 drains meet?

Water John

Caustic soda, followed by boiling water. Then give it some time. The quality of the toilet paper can be the problem.

ablelocks

https://www.boards.ie/discussion/comment/121547105#Comment_121547105

will try that first thanks

brownbinman

also try washing up liquid, a heap of it plus full boiled kettle. Give it 20 mins. Load up a basin of water and throw it down

youtheman

Really depends where the source of the blockage is. I have had, in the past, exactly the same symptoms you have. Every time I go and inspect the manhole closest to the toilet (outside in the path). If that manhole is full then that means the blockage is farther downstream, so the sewer rods or the Karcher kit you have works a treat.

antoinolachtnai

I would always work from outside and that’s how the professionals seem to do. for one thing you are less likely to flood the house.

It is better to go upstream if you can, again to avoid risk of flooding but also so you can easily see progress, when the blockage breaks

Locate the blockage as closely as possible first.