Question about Comet ZWD 4040 G-K Pressure Washer Pump With Built-In Unloader
30 weight NON DETERGENT. Autozone and other autoparts stores usually have it. It is often hard to find, so you might have to ask them where they hid it.
Posted on Dec 16, 2014
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Posted on Jan 02, 2017
SOURCE: I have a Pressure Washer
Derek, Hi and welcome to FixYa. I am Kelly.
I just now happened across your post and note it is 3 months old. Hopefully you already have the problem solved.
If not.. looking at the pump history of having the un-loader valve replaced it sure seems that the current un-loader valve is sticking. When an un-loader valve is removed the internal housing is sanded smooth and everything about the un-loader valve is coated with Lubriplate #105 White Grease. I get the feeling that who ever did the un-loader valve repair failed to sand / clean the housing and use White Grease for the final assembly.
You should remove the valve... Sand the housing and get some Lubriplate #105 white grease (auto parts store) in a tube. Lubricate it liberally and reassemble it. If should work fine after that.
Thanks for choosing FixYa,
Posted on Dec 07, 2010
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