still doesn’t suck.
Dirt Devil M084500V Vibe Quick Vac Bagless Upright Vacuum

How to Identify and Fix Common Vacuum Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced Vacuum Technicians :

What`s happening with your vacuum cleaner is that a clog has built up and debris being agitated by the roller is spitting out or stirring up dust without sucking it in.
Vacuum cleaners are fairly simple machines. They need power to be transmitted to the vacuum to create a suction force that lifts debris. So, the usual areas that cause suction loss include the wrong height setting, stuck rollers, a faulty gasket, a broken vacuum belt, a filled bag, or a clogged hose.
The air filter traps particles as the air travels through the vacuum cleaner. If the filter is clogged, the vacuum cleaner will not have proper suction. If your vacuum filter is clogged, refer to your owner`s manual for cleaning instructions.
Why is the vacuum is blowing dusty air out of the back? Simple: the bag or canister is full and the vacuum has nowhere to store the dust it is collecting. Empty the canister or bag. If that doesn`t fix it, the vacuum filter needs to be cleaned or changed.
Clog located in the vacuum hose

Turn the unit on and feel the suction at the end of the hose handle. If there is no or low suction, then the clog is in the hose. You can remove the clog by running a long, stiff object through the hose, such as a butter knife, starting at the wall end.

Fine particles. Fine particles are no match for even the strongest vacuums. Construction dust, makeup, used coffee grounds, fireplace ash, and other fine particles can burn out the motor and be released back into the air. It`s best to sweep these items up to keep your vacuum – and yourself – safe.
Vacuum means the absence of all matter including air. As there is no air in the vacuum, air pressure will be zero.
Why does my Shop-Vac® wet dry vac blow dust back into my room? The dust isn`t being stopped by the filter and is being exhausted out of the blower port and back into the air. This can be caused by a hole in the filter, the filter not being properly installed, or the dust being too fine for the filter.
Connect a tachometer and vacuum gauge to a none regulated vacuum source on the engine. Disconnect and plug fuel vapor canister vacuum lines. Start engine and run the engine until it reaches normal operating temperature. Note the vacuum gauge reading and any variations in the pointer movement at idle and 2000 RPM.
Dust before vacuuming

We recommend dusting before vacuuming, this is because dust particles usually get moved around the room when you dust, meaning all your hard work will go to waste. A top tip is to wait at least 2 hours after dusting to get the vacuum out.

One of the easiest ways to increase vacuum cleaner suction is to empty the dust bag or container. Dust containers need to have enough space for airflow, otherwise, they could get clogged and have less suction power. Regularly check your dust compartment and empty or change it when it`s already 70-80% full.
Boil old suction cups to revive them.

Take the pot off of heat and drop your suction cups in for about 30 seconds. Take them out with a pair of tongs and pat them dry on a lint-free towel. Try to use the suction cups right after you dry so they`re still warm and flexible.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

No suction I have the central vac type. It has no suction at the can. I pulled the hose going to the walls and tested there…and nothing. I removed the dirt can and checked the motor …it is spinning but does not feel like any suction. I checked the exhaust and it is pushing strong air out. I also cleaned the filter and still nothing. Is there a relay or something that would cause only exhaust air. I emptied the can of dirt and put it back together and have absolutely no air…..hear the motor
ANSWER : On some units there is a screen that protects the impeller of the motor. If this gets sealed off with debris then it is like putting a potato in the tail pipe of a car. Taking the top off the unit reveals the motor. DO UN-PLUG the unit first from the electrical outlet. Take off the exhaust piping if any to allow the motor to be lifted out of the canister. There is typically enough wire to allow this without taking any wires off. Look at the bottom of the motor to make sure the nut has not spun off the impeller and it is still attached to make suction. The look at the hole (aprox. 2″ round) to make sure it is clear of any debris. If it is not clean it and re-install everything. If the impeller is off the motor it is new motor time.
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.Hope this helps!!
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.VR

I have a DC07 and the brush wasn’t rotating and I had no suction at the brush but perfect suction through the hose. I noticed a large build up of dog hair around the brush so I took off the cover plate and removed all the hair, cleaned inside the floor/brush housing and cleaned out the hose. I also cleaned the filter and removed the other air access cover and made sure that they were clear. I put everything back and the brush still doesn’t turn and there is still no suction through the bottom
ANSWER : Hi and welcome to FixYa. I am Kelly.
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.Here is a link that can assist you in your quest for the missing suction:
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.http://www.ehow.com/how_4779428_troubleshoot-dyson-vacuum.html
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.Also Dyson has very good info on cleaning here:
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.http://www.dyson.com/support/help.asp?article=38&product=DC07-SY-HEPA_US
. (you have to keep clicking next…)
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.When you get to the part where it asks “is brush head turning?” that you say No. The site is a bit lethargic but should help you get going properly again
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.Hopefully you find “Airway inspection” as part of your on-line step by step troubleshooting.
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.If you still have the problem after following the steps above reply / post here and we can proceed from there.
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. Kelly
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I have a Dyson DC07 and it has lost suction. I have checked the belt, cleaned the circular filter and emptied the dirt chamber. The hose still has plenty of suction but I can’t use the hose the vacuum the entire house.
ANSWER : Here are some things you can check.First you need to see if the problem is with the suction or agitation.If the suction on the hose for using the attachments is low you either need new filters a new cyclone(they are not cleanable) or it is clogged.To check for a clogg remove the cyclone and turn on the vacuum cleaner.you can put your hand over the suction side of the handle tub and feel if it has suction there.Reinstall the cyclone and again check the hose.If it is the same you don’t likley have a suction problem you have an agitation problem.The 2 belts on the DC07 are part of the clutch and when they are strectched to a certain point (3-5years) the clutch needs to be replaced.you can check the clutch by turning on the vacuum cleaner and applying slight pressure downward on the front of the vacuum head.If the vacuum makes a loud ratcheting noise or you can stop the brush from turning the problem is most likely the clutch.One last thing is to make sure the bottom plate is on correctly I often see a misaligned bottom plate and the brush dosen’t hit the carpet so it dosen’t pick up.  www.sewvac.com

My vac has lost suction. When I vacuum it picks up very little, but when I remove the wand hose it has good suction. We have cleaned both filters, checked for blockage in all hoses & cleaned the beater bar brush. All to no avail. Is it the motor? Or is there a blockage deep in the vac somewhere? We’re debating repair versus buying a new one. Hope you can help. Thanks.
ANSWER : Hi there,

Sorry to hear you’re having a problem with your DC14. Since you say you’ve already washed the filters and checked for blockages, it’s probably best if you get in touch with us so we can run through some simple troubleshooting steps over the phone, and arrange service if necessary.

You can call us free on 08002980298 (UK) or 1866MYDYSON (US). I’m sure we’ll be able to help.

Kind regards,

Jack
Dyson Customer Service

Poor suction The actual sweeper seems to work ok, but the hose attachment has some suction but not enough to pick up things I think it should and not enough to make the power brush spin. I’ve checked everywhere I can for clogs, but I can’t see anything. And there doesn’t seem to be any way to check to hose itself for clogs. I’ve cleaned out the container and the filters, but there’s still a problem.
ANSWER : Check the inlet down by the brush roll, make sure it is open, if it is then the hose itself must have a clog. If the hose comes off, drop something like a marble in one end and see it it comes out the other end, if it doesn’t then you have a clog.

The vacuum does not have suction. I have cleaned the filters, checked the hose paths and the hose won’t **** anything up. I even checked with all the filters removed, still no suction. It is blowing air out the exhaust.
ANSWER : Have you checked the belt?

It has no suction. It was fine yesterday. I washed the dirt container and the filter, let it dry and put it back in the vacuum. Today my vacuum isnt picking up any dirt and has no suction. When I took the hose out of the back, it started blowing dust and dirt out but still no suction.
ANSWER : Look for a place where the vacuum line has to turn in a near 90 degree turn. It’s easy for it to get stopped up there.

I have a power drive baggless vacuum cleaner…it runs well, but suddenly it seems to have lost most of the suction coming through the hose and floor area. When I remove the dirt container, the suction below it seems strong. I have had it to repair twice–they have tuned it up and replaced all filters and belt. It still does not pick up well when I vacuum or use the hose. Can you help ?
ANSWER : There is something stopping it up,you will have to dissasemble the unit to find the blockage,this is the most likely problem.