Pressure washers are very useful for cleaning cars and washing patios and decking.
The most powerful models cost hundreds of pounds so to avoid your pressure washer breaking, take a look at how to avoid issues, such as leaking and pump failure.
This most common fault frequently appears after a pressure washer has been left idle over the winter and is often caused by water in the pressure washer freezing, expanding and splitting plastic components.
An old and worn-out pump can also be the cause.
Drain your pressure washer before you store it for the winter – check the manufacturer’s instructions for how to do this. Do not allow your pressure washer to freeze by storing it in a frost-free place - garages and sheds often aren't frost-free so you may need to store it in the house.
It is possible to buy replacement parts for the plastic components and pumps of some pressure washers – check the manufacturer’s website for further details.
If there’s no water coming out of the lance it might be that the nozzle is blocked. If the lance itself is leaking this is probably due to splits in the plastic or failures of the seals caused by wear and tear.
Always check that your lance and nozzles are assembled properly before turning on the trigger to avoid straining the seals between them.
Avoid dropping your lance on the floor while you are using it and always check that the nozzles are free of debris. You could use a pin to gently remove any debris you find. If your pressure washer has storage slots for the lance and nozzles, use these when you are cleaning instead of propping the lance on the floor where it could pick up dirt.
There can be a number of problems that cause this symptom, such as a blocked nozzle or water inlet, inadequate water supply, air in the inlet water supply hose or the pump.
If the pressure is pulsing it’s worth checking that the water supply is fully turned on and that the hose supplying the pressure washer is not squeezed or kinked first. Then clean the water filter. To get rid of air run the pressure washer with an open spray handle and nozzle at low pressure until regular working pressure resumes.
If the pressure is steady but low it can indicate a worn stop/start valve – squeeze the trigger five times in quick succession to get it working again. Otherwise it might be a worn nozzle, which should be replaced.
Again, this is commonly caused by frozen water damage or wear and tear.
Always drain your pressure washer after using so no water is left in the pipes and avoid storing your pressure washer where it can freeze. Garages and sheds are often not safe from frost so you may need to store your pressure washer in the house for winter.
Seals can be replaced in some cases, so check with the manufacturer.
Frozen and cracked pump components are the chief suspect here, but another culprit could be running the pump without the water flowing, or ignoring other problems that cause the pressure washer to run incorrectly.
Store the pressure washer in a frost-free place, such as a cupboard in the house, and make sure that the water is turned on and at adequate pressure before running the pump. Takes steps to remedy a pulsing pressure washer.