I bought a second VAX wet & dry vacuum cleaner from a boot fair for £5, sucks up water much better than any Bissell, I use it after shampooing my carpets, leaves them almost dry, also handy for vacuuming.
Delshan, August 2020
The sucking airway is either blocked (possibly) or is leaking and allowing air to get in where it should not (more likely)
You would do well to examine it closely - the airway.
