Slow rise in toilet tank water level

[sparky472]

I just replaced the guts of my toilet with a fluidmaster replacement kit (fill valve, flush valve,etc). Everything seemed to work just fine. But I noticed that the water level in the tank is rising very slowly. As an example, I flushed it about 2.5 hours ago and the level in tank rose about 1/4" - 1/3". After flushing, the tank fills properly and shuts off, after which I hear no sounds at all coming from the fill valve or anywhere else. I hung out in the bathroom for 15 minutes to see if I could hear anything, but I don't. I'm at a loss. Any ideas?

[havasu]

You may have the black float adjusted too high, which actually means you didn't compress the cylinder low enough on the vertical shaft, not allowing the valve to seal completely. If you have the ability to lift the black float higher, which shuts off the water completely, make another adjustment.

If it does appear that the black float is at its highest limit, I suppose you may have a defective Fluidmaster kit.

[sparky472]

Originally Posted by havasu

You may have the black float adjusted too high, which actually means you didn't compress the cylinder low enough on the vertical shaft, not allowing the valve to seal completely. If you have the ability to lift the black float higher, which shuts off the water completely, make another adjustment.

If it does appear that the black float is at its highest limit, I suppose you may have a defective Fluidmaster kit.

I'm not sure I understand about compressing the cylinder low enough. Is this referring to when the instructions direct to hold the float under the water for 30 seconds while the tank fills? I any case, I've got room to raise the float more so I can try that. Thx

[havasu]

Sometimes pictures are worth a 1000 words.

[sparky472]

I see what you are saying. I did adjust that to what I believe is the proper height when I installed, such that the critical level mark is one inch above the top of the overflow valve. Are you suggesting that I raise or lower the entire assembly on the shaft, as opposed to just the float itself?

[havasu]

I'd lower it at least one notch. You want the water level below the overflow tube, but high enough to get a full, complete flush.

[sparky472]

The adjustment screw on the float had a little bit more room to raise and that seems to have solved the problem. The water level sits about an inch below the top of the overflow tube, and is remaining constant. To compensate, I adjusted the adjustable flapper for less water to flow out of the tank. I'm getting a good flush but not completely draining the tank. So I think I'm in good shape now. Thanks

[havasu]

Good deal, glad we could help.