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post #1 of 5 Old 04-09-2018, 05:23 PM Thread Starter
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Preasure washer pumps

How do you know if your pump is bad and how do you rebuild it
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post #2 of 5 Old 04-09-2018, 10:25 PM
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Re: Preasure washer pumps

What make/model pressure washer? If the engine runs but your not getting pressure, removing the pump and putting on a new one is super simple to do and there are hundreds of youtube videos showng exactly how to do it.

I just did mine a week ago, took the old pump off, ordered a new pump thru Amazon and bolted the new pump on. Works terrific now.
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post #3 of 5 Old 04-10-2018, 12:15 AM
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Re: Preasure washer pumps

Well, you know it's bad when you turn it on/start the motor, hook up water to it, and it doesn't spray water out at high pressure... :-)
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post #4 of 5 Old 04-10-2018, 09:40 AM
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Re: Preasure washer pumps

That doesn't mean its "bad" in every case,it may just have a stuck valve in the pump,or some corrosion blocking up the flow passages..but most pumps do "die" that way,they just wear out and cant build up enough pressure any more..its rare to luck out and have it be a simple thing that can be repaired easily and for little or no expense..

When you turn a pressure washer on for the first time after winter storage and water gushes out from all over the pump,its likely cracked from allowing the water that wasn't fully drained out to freeze...THEN its bad!..as in scrap !..
I've had several pressure washers given to me in that condition,all I could salvage was the still like new engine,that had maybe 5-10 hours use,if that...unfortunately a decent new pump costs about as much as another whole unit,so I never replaced the pumps,I just used the engines for other purposes..

I think they make pressure washer pumps out of die cast junk on the lower priced ones sold at most department stores,knowing 90% of them will die from being allowed to freeze ,and most folks consider a pressure washer that costs under $200 "disposeable"..


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post #5 of 5 Old 05-20-2018, 04:29 PM Thread Starter
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Re: Preasure washer pumps

My preasure washer starts to pulse ate the spray when it gets hot after twenty minutes or so
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