JRscooby wrote:

I can see how that would work. OTOH, the valve in toilet starts to leak, water drains thru the overflow, overfills bowl, and down drain. Can waste a lot of water but that is the only harm unless you have to pay a plumber to replace it.
A similar system is the float/needle seat system in a carburetor. When that leaks gas can get on top of engine, but it also dumps into the engine stops it from running right (if at all). Fuel pump stops putting gas to carb. Fire is a possibility, but most likely expense is carb rebuild.
What happens if you park the truck with a leaking float valve.
BTW, in my lifetime I have replaced over 100 toilet tank valves, and rebuilt even more carburetors. Failure is not a far-fetched idea.

Sport45 wrote:



If it's overflowing I'll likely smell the diesel when I get out of the truck, notice the spots of fuel blown up on the back of the truck (yes, I know what a fluid leak does to a moving vehicle) or see the puddle under the truck. Just like other failures I've dealt with I'll close the manual valve until I get a chance to repair or replace the float valve. I won't be losing any sleep waiting for the failure to happen though.