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Troy-Bilt 3000 psi pressure washer

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#1 Joey davies OFFLINE  

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Posted January 24, 2017 - 06:22 PM

I have an 8.75 horsepower, 190 CC pressure washer. I clean the carburetor and jets, check the load valve, and am able to start and run the motor with the water hose connected. Water shoots out the port strong, so I hook up the spray hose and gun. I can start the motor and it runs with the gun trigger as long as there's no tip on it. As soon as I put a spray on my wand the motor stalls out. Only the black tip with the large hole works on the wand to keep the motor running as long as I have the trigger pulled. Once trigger is released, the engine stalls again. It was working great up until the last time I used it a week ago. I called Briggs and Stratton tech support and they had never heard of this condition. Any speculation would be greatly appreciated at this point LOL thank you

#2 Eric OFFLINE  

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Posted January 24, 2017 - 07:57 PM

It sounds like a problem with the pump possibly. Not sure of the workings of your machine.
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#3 secondtry OFFLINE  

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Posted January 24, 2017 - 08:29 PM

Unloader valve not functioning? Don

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#4 bhts OFFLINE  


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Posted January 24, 2017 - 09:42 PM

Unloader valve not functioning? Don


I have to agree. Sounds like it is stuck. Do not keep running it this way as it may damage it. You need to check this valve and make sure something has not got in it and jammed it.

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#5 boyscout862 ONLINE  

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Posted January 25, 2017 - 08:28 AM

Welcome to GTT. It may be in the pump so check that thoroughly first. If the problem persists, I would suspect the governor on the engine and the carb. Good Luck, Rick

#6 chieffan OFFLINE  

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Posted January 25, 2017 - 08:35 AM

I don't think it is in the engine.  Like the other have said, unloader valve is stuck.  My Coleman did the same thing a year or so ago.  Cleaned it up and has worked fine ever since.

#7 Bruce Dorsi ONLINE  

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Posted January 25, 2017 - 10:05 AM

Do a Google search for "Troy-Bilt unloader valve."


Lots of links about the same problem and how to clean, repair.