Excell power washer: works great when it works


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Old 05-07-21, 02:27 PM
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Excell power washer: works great when it works

Hello, you guys helped me get my mower up and running so maybe you can help with my p/w. I have an Excell 2500psi p/w bought from HD about 15yrs ago. It has a 5 hp Honda GC160 engine on it which I changed the connecting rod assembly and valves last year and the pump on it about 4 yrs ago. The pump has maybe 10 hours on it. It is an after market pump because the original bit the dust. My problem is that the pressure is not there to its fullest. It works really good for about 15 minutes and then it becomes a glorified garden hose. The owners manual said it could be worn seals or packing, worn or obstructed valves ,worn unloader piston or worn ez start valve. I don't know what those parts are. Are they part of the engine or the pump? I'm assuming the pump since the pressure dies. Could the pump really be bad after only about 10 hrs of use? Any help as to where to start is appreciated. Thank you.
 
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Old 05-07-21, 06:46 PM
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The pump could definitely be bad in 15 years. There are aluminum parts that corrode, springs that can corrode, and plastic valves that can become brittle and fail. Sounds like the check valves are letting pressure bypass.
 
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Old 05-07-21, 11:57 PM
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Thanks cheese. The pump is only about 4 years old and only has maybe 10 hrs on it. Idk what those parts described in the owners manual are part of. The pump or the engine? And also, is there a way to test the pump? Thanks
 
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Old 05-08-21, 04:56 AM
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If the engine runs but the pressure washer doesn't work then your problem lies in the pump, which is where the parts Cheese mentioned are located. You are testing the pump when you try to run it. It sounds like you have determined that the pump isn't working.
 
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Old 05-08-21, 05:10 AM
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Thanks Pilot Dane. The engine runs good. I've noticed that the engine doesn't change sound when pulling or releasing the trigger. Do you guys think it's better to replace the pump or replace the check valves? Thanks again.
 
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Old 05-08-21, 10:48 AM
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I missed the part about you replacing the pump 4 years ago first go-round. Still, the problem is in the pump, as Pilot Dane said. You might be able to open it up and clean and lube the parts to get it back working. You never know until you see.
 
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Old 05-09-21, 12:01 PM
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Thanks for the replies. I'm gonna give it a try. Worst case is that I break it. Oh wait it's broken already.
 
 

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