Question about Honda Maxus Pressure Washer MX5222

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No pressure from the machine, i alredy cleaned the hose, the machine is making unusually loud crashing noises. i put oil, gasoline, everything is good but there is no pressure from it. how can i repair this and where can i go to get this repaired.

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  • firehead May 11, 2010

    What model is it and what engine is on it?



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Posted on Jan 02, 2017

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SOURCE: pressure washer stalls

Pressure washers work under very dirty conditions, no wonder they encounter engine problems. Here are a few pointers from a former pressure pump tech. The unloader is a source of engine overloading however this can easily be checked with a pressure guage attached to the gun with a tee fitting having the guage and the normal tip used for the unit. The pressure should never rise over rated pressure. The pressure should drop considrably when trigger is released. The life of the pump and engine can be increased by setting max pressure to 75% of rating. Most engine problems are from following conditions:
Leaking or misadjusted valves; clogged muffer /spark arrester; weak spark coil that is about to fail completely; kill switch/oil sensor wiring and or sensor mal function; gas cap not venting properly causing vacuum in tank and wet or dirty air filter.
All these problems easy to check, fastest repair is to disconnect oil sensor wire to check oil safety system. Then temp replace coil with known good coil. Loosen muffer bolts to check for clogged muffler. Temp run engine without gas cap to check for vacuum. Finally if everything fails, run the engine with carb cleaner spraying directly into the intake. If the engine continues to run with carb cleaner then the problem is fuel delivey and faulty carb. enjoy

Posted on Dec 01, 2008


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I'm sorry to hear your DC18 is making an unusual noise. Please note, the filter located beneath the clear bin is designed to last the lifetime of the machine, and does not need to be maintained or replaced. Attempting to clean this filter is likely to cause damage, so we'd strongly advise against this.

Although I note you've already cleaned the filter located inside the cyclone pack, you might want to take a look at the video below to check you've done so as recommended. In normal use, this should be done at least once every 3 months. Use cold water without detergent, and allow at least 12 hours for the filter to dry completely somewhere warm before replacing it.

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If your machine continues to make an unusual noise, I'd encourage you to get in touch with us directly, as we'd appreciate the opportunity to provide further assistance. You can reach us on 0800 298 0298 (UK), or 1-866-693-9766 (US).

Best wishes,

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