Root Of Pulsing Problem
Your pressure washer pulsating is a sign that something is wrong, so you'll want to fix it right away. Do you think just simply is turn off and start your pressure washer again will be ok? No, it stems from problems inside the machine and you need to know about them. There are several reasons for a pulsating pressure washer, so check these common issues yourself:
1. Clogged or Dirty Nozzle
The first thing you should check when your pressure washer develops a pulsating spray is the nozzle. Give the nozzle a visual inspection as well. Look for any cracks, wear, or damage. Once you've cleaned the nozzle to the best of your ability, reassemble it and test your pressure washer again. If the pulsation continues, the nozzle may be too worn to function properly anymore.
In that case, you'll need to replace the nozzle with a new one designed for your specific pressure washer model. Matching the rated PSI and GPM is important for optimum performance.
A clean or new nozzle can solve many cases of pulsating pressure washers. So start there first before checking other components. Properly maintaining and replacing your nozzle when needed will help ensure smooth spray and the best results from your pressure washer.
2. Filter Screen Block
One possible reason your pressure washer has a pulsating spray is a blocked intake filter screen.
The filter screen is located where the water supply hose connects to the pump. Its job is to catch debris and prevent it from entering the pump.
But over time, particles and minerals can build up on the filter screen and clog it. When this happens, less water can flow through it into the pump. This restricted water flow causes the pump to pulse instead of producing a steady stream of pressure. This makes your pressure washer pulse and reduces the water pressure (PSI) produce. For high performance, we recommend you change to Twinkle Star Sediment Filter
3. Damaged Hose
Another possible cause of your pressure washer pulsating is damage to the high-pressure hose.
The hose connects the pump to the spray wand, carrying water and pressurized air to create the spray. Any damage such as a leaky pressure washer hose that restricts the flow within the hose can cause pulsation issues.
4. Worn Pump Components
Another potential cause of your pressure washer pulsating is wear to internal pump parts.
Inside the pump are various components that work together to create high pressure. Over time and with normal use, these parts can wear out – especially seals, valves, and pistons.
As parts like piston seals start to wear, they cannot form a tight seal with each pump stroke. This leads to air leaks and fluctuations in pressure, causing the pump to pulse instead of producing a steady spray.
Valves inside the pump can also wear down and become less efficient at regulating water flow. This uneven flow travels to the spray nozzle, resulting in pulsation.
How To Fix Pressure Washer Keep Pulsing
Alright, so you've got a pressure washer that's pulsating and not spraying steadily. Don't worry, I'm going to walk you through step-by-step how to troubleshoot and fix the issue.
First things first, let's make sure it's not something simple. Check the nozzle for any dirt or mineral deposits that may be blocking it. Give it a good scrubbing and see if that helps. You'd be surprised how often a clogged nozzle is the culprit!
If that doesn't do the trick, let's move on to the filter. Take off the filter screen and rinse it out thoroughly. Any gunk trapped in there can restrict water flow and cause pulsating.
If still keeps doing it? Okay, next I want you to inspect your pump hose. Feel along the entire length for any soft spots, cracks, or kinks. A damaged hose could be the issue.
If the hose checks out, go to all of your fittings and connections. Give each one a good twist to make sure they're tight. Sometimes a loose fitting can let air into the line and cause the pulsating.
Those first few steps fix most pressure washer pulsation problems. But if you're still having the same issue, it's likely a worn pump part like seals, valves, or pistons. At that point, I'd recommend taking it to a repair shop to have those components checked and replaced if needed. For the last, remember to maintain your pressure washer by changing the pump's oil, and replacing the part when it is damaged.
Tips to Avoid Pressure Washer's Pulsating
Follow these tips below to prevent pulsating in your pressure washer:
Before Using:
Inspect all hoses for damage or cracks that could cause pulsation. Replace any worn hoses
Check that all hose fittings and connections are tight to avoid air leaks that cause pulsation
Clean the nozzle of any debris that could block the spray pattern and restrict the flow
Remove and clean the intake filter to ensure it's not blocked
After Using:
Flush out the pump with clean water to clear out any residual soap or chemicals
Disconnect all hoses from the pump and spray wand
Store the nozzle tip in a plastic bag to keep it clean
Place the wand and hoses in a loose coil to relieve tension on the connections. Do not tightly coil the hoses
Cover the pump and wand with a tarp or cloth to keep out dust
Twice A Year:
Completely disassemble the pump and check internal components like seals, valves and pistons for wear
Replace any worn parts before they cause pulsation issues
During the winter, fully drain water from the pump to prevent damage from freezing
Consider adding a fuel stabilizer to the pressure washer's engine if it will be stored for an extended period
Conclusion
Most pulsation issues arise from blocked or damaged components that restrict water flow. By inspecting your pressure washer thoroughly before and after each use, and performing proper maintenance, you can help ensure smooth, consistent spray for years to come.
