Seals failĪgain, this is commonly caused by frozen water damage or wear and tear.Īvoid storing your pressure washer where it can freeze. Otherwise it might be a worn nozzle, which should be replaced. 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. 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 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. 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 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.
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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.Īlways check that your lance and nozzles are assembled properly before turning on the trigger to avoid straining the seals between them.Īvoid dropping your lance on the floor while you are using it and always check that the nozzles are free of debris. If there’s no water coming out of the lance it might be that the nozzle is blocked. 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. Do not allow your pressure washer to freeze by storing it in a frost-free place.
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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.Īn old and worn-out pump can also be the cause.ĭrain your pressure washer before you store it for the winter – check the manufacturer’s instructions for how to do this. Here’s a round up of the top five problems Which? members had encountered with their pressure washers and our advice on how to avoid them. Choose the right one for you from our Best Buy pressure washers. If you’re thinking of buying a pressure washer then you’ll want a quick machine that’s also easy to use. Nearly two thirds of Which? members own a pressure washer, and around a quarter have bought one in the past five years. We asked over 6,400 Which? members about the reliability of the garden machinery they had bought in the past 10 years. The most common pressure washer fault is water leaking from the bodyĪ unique Which? survey has revealed the five most common faults that affect pressure washers, so we can help you to avoid them, too.