Jeff,
Confirmed, the water level in the tank does rise to the fill line.
Yes, the water level on the weak flushes does rise unusually high.

I have not reamed out the water discharge holes under the rim of the bowl
yet, but will do that and report back.

Thanks for the help.
Timo

"Jeff Wisnia" wrote in message
...
Timo wrote:

We have two toilets on the second floor of our house. One toilet has
frrequent but intermittent weak flush. A few flushes in a row might
flush
strongly, then one, or maybe two,will be weak. The water in the toilet
never
quite gets beyond a rapid swirl. And then there's another strong,
complete
flush. Mind you, this is with nothing but water in the toilet. When I
say
"in a row" I mean simply letting the toilet tank fill completely and
then
flushing the toilet after each fill.

We've had a plumber use a snake to make sure nothing is lodged in the
"S" of
the toilet. He said it could be a bird trapped in the vent that exits
the
roof, and that if we bought a new super-dooper water-pressure toilet
from
them ($900 installed) they'd run a snake up towards the rood and down
towards the sewer from opening in the bathroom, at no extra charge. He
lifted the tank lid to look inside, and noted that some bubbles were
coming
up into the tank but did not explain the significance of this symptom.
What
do bubbles coming up into the tank point to? Is the toilet not seated
properly on the lead pipe in the floor?

Thanks
Timo



Are you SURE the tank is full prior to each flush?

Try leaving the tank lid off for a while and eyeball the water level
before you flush.

Have you reamed out the water discharge holes under the rim of the bowl
with a small screwdriver or a piece of coathanger wire?

When you get that "weak flush" does the water level in the bowl rise
unusually high?

Give us a bit more info and soeone will find the answer for you.

Jeff

--
Jeffry Wisnia

(W1BSV + Brass Rat '57 EE)

"Truth exists; only falsehood has to be invented."