Is it possible???

[Rockitmakr]

All input here is and will be helpful....
Is it possible to get to much air from the venturi into the needlewheel? The reason for the question is.........
Sometimes I will wake up to the ASM not skimming like it should. The water on the exhaust of the skimmer is very minimal leading me to believe the pump is beginning to cavitate. If I plug the end of the airline for a brief second, the pump will kick into high gear again. Now, the Venturi has been drilled out slightly & the airline was replaced with a larger ID tubing that does allow air to flow through with less restrictions, this is the only mod that has been done to this skimmer.
Any takers???
:beer:

[luke33]

It is possible to cavitate a pump. When this happens the pump will shut down......or burn up : )

Sounds like you have a faulty pump though ime or one that needs a good cleaning.

[Rockitmakr]

Pump is fine, just gets air build up in the volute then pumps way less H2O.
Others?????

[luke33]

Its not a normal thing for a pump to get air built up in the volute. That sounds like your playin with fire man.