Suction is very poor - Eureka Whirlwind 4388 Bagless Upright Cyclonic Vacuum

It could be something has the hose constricted... You might want to do a little more cleaning inside other than just changing the bag... Have you seen the cat lately? Also check the roller brushes to see if they have something like string wrapped around the ends.
Have a nice day !!!

Check suction at intake without any hose connected. If that is good, then connect hose and check suction again. If that is poor, then you have a clog. If still good, then check power nozzle by getting into the belt area.
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All these responses are BS. I have an FB-DCC...AWESOME suction. When's the last time you CLEANED YOUR FILTERS?

Hi its Darran at Dyson.

It sounds as though the wand/hose is blocked. with the machine locked in the upright positino, remove the hose from the machine, switch on and test the suction. If the suction is poor, remove the wand from the hose and test the suction from the top of the hose. If the suction is strong, you will need to check the wand for a blockage. If the suction is still poor, check the hose for a blockage.

You may find it useful to wash the filter as this can sometimes cause a drop in performance if its dirty and it wuold be more noticable from the hose.

I hope that this information is useful to you.

Kind regards
Darran
Dyson Customer Service

Hi its Darran at Dyson.

It sounds as though the wand handle is blocked. To check this, remove the wand/hose from the machine as if you were going to use it to vacuum the stairs. Switch the machine on and test the suction at the top of the wand handle with your hand. If the suction from the wand is poor, remove the wand from the hose and test the suction again from the top of the hose. If the suction here is good, then you know the wand handle is blocked. If the suction is poor at the hose, you can remove the hose from the machine and clear any blockages here.

For the full blockage procedure please visit the support section on our website at www.dyson.com.

Kind regards

Darran
Dyson customer Service

Poor suction can be caused by obstructions, poor air flow or a compomise in the air flow (hole in the hose). Since you have started with that I would next look at all filters and clean them. First check for suction at the motor, then at accessory hose and then the base. this will lead you to a suction issue. If your baelt has not been replaced in the last 6-12 mo I would change that too. check to make sure your carpet setting is coorect for the carpet being cleaned.

I’m happy to assist further over the phone at https://www.6ya.com/expert/robert_b96ba3f038cf317c

I took the bottom apart and it needed a new belt and that was the problem so it's fixed.

There is most likely a clog in the hose. If the hose has poor suction the foot probably has poor suction as well seeing that the hose is what gives the foot assy suction.

i had the same problem and moter cutout for over heating.i removed everything removable to see blockages i found a ball point pen and wood shavings.i cleaned every part possible including the rubber gaskets.also cleaned the bubber gasket in the waste bin.[mine is a 07] still poor suction. i removed side filter washed it in "warm water" and washing up liquid[dyson say to use cold water] the rinsed out in cold water,left the filter over night on a news paper nr the radiator. problem solved..fantastic suction and no over heating.hope this will help

Did you check to see if brush is spinning ,
is belt broken? It could be something stuck
in the mechanism in the impeller, shute,etc