Re: Toilet doesn't suck.....water down properly
If you are getting a flush by pouring water directly into the bowl and are not having any other drain problems, then it is unlikely that it is a septic problem. Being that this is a rental, it's likely that something got tossed down the toilet and is now lodged in the neck just behind the bowl. If you can't get the toilet to work with a toilet auger, then pulling the toilet and flipping it upside down and backflushing it with a garden hose may be in order. This will generally push whatever is stuck in the neck back out through the bowl.
There have been a number of toilet flush related problems that have been covered in the last few weeks. Take a look through the topics in this forum for other problems similar to you'll likely find a number of great remedies.
Hope this helps.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!