Little suction on most outlets

Probably not. Both motors usually wont stop working at the same time. You have given us very little information. Model number? Brand?

HAND VACUUM WILL NOT PICK-UP OR SUCTION POWER IS WEAK 1. Dust cup filter is full. 2. Unit clogged. 3. Dust cup filter needs cleaning. 1. Empty dust cup filter - (see page 4). 2. Turn unit off and unplug from wall outlet. Remove dust cup filter and check for object(s) in air duct and remove. 3. Clean or replace dust cup filter. (see page 6 manual below link http://www.sharkclean.com/manual/EP366_(700_WATTS)_REV_0603A.pdf

I would recommend checking your wall outlets where the hose plugs in for any type of clog in the tubing. If the vacuum itself has great suction but when you go to the wall outlets that is probably something in the hose that is stuck. If cleared it will most likely have excellent suction throughout the entire system in the house.

Sometimes the vacuum will overheat, if this happens the vacuum will shut down to protect it from damage.

Unplug the vacuum, and let it sit unused 30 minutes.

Please let me know if this has solved your problem.

Check the filter in the tank. If this is dirty, the motor will still run, but there will be little to no suction. Rinse thoroughly under warm water, then allow to thoroughly air dry before replacing into vacuum.
I recommend having two filters in order to use one while the other is drying.

First, check the hose, wands, and power nozzle. You can check the hose by dropping a coin in one end, then lifting the length of the hose until the coin drops at. If it doesn't, then there's an obstruction in the hose that needs cleared. Depending on where th blockage is, it can be difficult to remove. The best way is to connect the wrong end of the hose directly to the in port of the vacuum and turn on. This presents an opposing suction to the clog and should clear it.
To check the powerhead, drop a coin in the wand end and allow it to drop through. If it gets stuck, there's a clog, probably in or near the elbow. Use a blunt object to gently push it through. You can visually check the wands.
If the filter is dirty, it presents an obstruction to the airflow, and will result in a loss of suction. Rinse and dry thoroughly. I recommend keeping an extra filter on hand and alternate use.
Check all outlets by plugging hose into them and turning machine on. Check for differences in airflow. If there's less suction in one than the other/s, then there's a blockage in that section of pipe, probably at one of the elbow. The obvious place would be the elbow at the outlet. Visually check for clogs.
If all the outlets have a low airflow, my first guess would be the filter in the vacuum, but there could be a clog in the main piping.
Another cause could be leaks in the hose, most likely at the ends where the hose connects to the connector or handle. The hose generally needs replaced if this is the case.
The fan system may be bad, resulting in reduced suction. It will need to be replaced if this is the case.
Depending on the age of the vacuum, the motor could simply be wearing out.
The best diagnosis can be provided by a reputable vacuum repair shop. Take the entire vacuum in for trouble-shooting if none of the above helped.

there would be 2 things potentially wrong here...

1) the black rubber gasket is missing off the body where the pail goes onto the machine. If that is missing there will be no suction.

2) This is a little more complex but will also lead to the same problem. up above where the bag goes there, is a filter. It could be clogged, but if you are getting a lot of air blowing out of the unit, I think it is more the rubber gasket between the motor and the body. You can check for this by looking behind the little motor pre-filter there (if it is even there) and check the motor intake for the unit. It is probably blocked or partially blocked with the motor gasket. To fix this you will need some weather stripping or another motor gasket.

Good luck.
Mark

If it's just the one outlet, then there's probably a clog in the pipe between that outlet and the main pipe. You may be able to clear it by plugging the hose into a working outlet, placing other end to non-working outlet, and turning vacuum on. This may provide enough suction to **** out the clog.
If not, you'll probably need to use a mini plumber's snake to try to remove it.

try another otlet.if you have it plugged into a gfi outlet the little circit beraker on the outlet might have trippid if so push in on the red buttom till you hear it ckick.thatd resetting the gfi outlet.those kind of outlets can be found in thr kitchen,bathroom and outside.

Is there suction where the pipe hooks to the cannister? If so, then are all of the outlets without suction? Maybe the hose is plugged. If the hose is ok, and there is suction at the cannister, then **** up a small **** of paper, one for each room outlet, have a number on each piece of paper, Which ever one doesn't ,ake it thru to the cannasiter is the outlet that is plugged. You can use a plumbers snake to clean out a clogged outlet or even a clogged hose.

If the motors are running and sound ok, then there has to be suction at the outlet on the cannister. If the filter bag is old, it may be best to replace it with a new one.