If none of these adjustments works then your door closer may be worn out and you will need to buy a new one to replace.
Adjust door closer strength.
Replace the plate and if necessary the door and you.
Turn the screw marked with an l counterclockwise 1 4 turn to increase latch.
Insert a 1 8 inch allen wrench or screwdriver in the appropriate set screw.
This video shows you how to adjust the tension on your automatic door closer.
Turn it clockwise to reduce the speed counterclockwise to increase the speed.
To adjust the latch or sweep speed.
If there is just one screw on your door closer turn it clockwise to increase the speed with which the door closes.
Remove the plate to inspect the door closer body for leaks see below if adjustment holes had not been drill during the original installation measure where the adjustment screws are located.
Turning the valve counter clockwise will cause the door to close faster.
Adjust the force with which the door latches or swings from 15 degrees to fully closed by changing the latch speed.
Storm doors have a connecting pin that can be set into two separate slots to change the tension on the door.
This video shows you how to adjust the tension on your automatic door closer.
Most closers allow you to adjust the speed and power of the door.
Most door closer brackets have slotted holes so you are able to slide them left to right to make adjustments without.
Turning the valve clockwise will cause the door to latch slower and more gently.