Quick Answer: How Do I Fix My Pressure Washer Surging?

Why did my pressure washer lock up?

If you tipped the pressure washer on its side recently, oil may have filled the cylinder, preventing the engine from spinning.

Remove the spark plug and then pull the starter rope to see if the engine spins.

If the recoil starter spins after removing it from the engine, then the engine is locked up..

How do you know if your unloader valve is bad?

Pump motor stalling – if a pump is powered by a gasoline or diesel engine, stalling whenever the operator ceases to use it is a good sign of unloader valve failure. The buildup of pressure locks the pump’s internal components, which in turn prevents the rotation of the powered engine shaft.

What does a unloader valve do?

The unloader diverts the flow of water from the outlet side of the pump back to the inlet side, causing water to flow in a loop back to the pump under virtually no pressure rather than to the nozzle under operating pressure. Flow may be directed back to the pump inlet or to a float tank or other type of reservoir.

What causes pressure washer pump failure?

Pump Problems The two most important issues concerning breakdowns of pressure washer pump are pump cavitation and overheating due to excessive time in by-pass. Pump cavitation is caused when there is not enough water supplied to the pump.

Why would a pressure washer stop working?

The most common cause of low pressure for a pressure washer is an incorrect nozzle or a nozzle that has worn out. … Replace any worn out or broken nozzles when they are discovered. If your nozzle and wand look to be in good shape, there is the possibility that the RPM on your engine is not set properly.

Why does my electric power washer keep shutting off?

When the air filter gets clogged, you must replace it immediately. The engine of your electric pressure washer turns on and off when its unloader valve fails, so you must check it regularly. Sometimes replacing the capacitor can also help solve your electric pressure washer’s problem.

Can you repair pressure washer pump?

When the pump on your pressure washer gives out, don’t be too quick to replace it. You may be able to save a lot of money by repairing the pump with replacement parts from Toolbarn.

What causes a pressure washer to pulsate?

Water flow may be restricted to the pressure washer. Check that all hoses are free of kinks, leaks, or blockage. … If the nozzle has even a little bit of dirt in the tip, it may cause enough obstruction for the pressure washer to pulsate. If your pressure washer came with a nozzle cleaner, use it to clean the tip.