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How to fix it a leaking pump on a black max 4000psi pressure washer

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Honda 4000 motor runs great, pump not preasuring up water changed pump and no change, shaft from motor into pump was good felt like it was under compression but still no preasure

The pressure relief valve could be stuck open or faulty. The check valves may be stuck or plugged up. Try thoroughly clean these parts and see if that helps.

Mar 31, 2015 | Honda 13 Hp 4000psi 4gpm Pressure Washer...

2 Answers

I have a 16hp pressure washer Briggs how do I adjust the pressure?

They are set at the factory if its dropped in pressure it couldhave popped an O . Ring. Check out.

Jul 26, 2014 | Cam Spray 4000BT 16HP Briggs 4000psi 4GPM...

1 Answer

Pump not adding pressure to water flow

stuck valve ( only needs one ) or plungers not moving . check each value methodically , then go deeeper if necessary.

Feb 01, 2014 | Annovi Reverberi RSV4G40HDF40EZ Pressure...

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Pressure washer turns off after 3 or 4 minutes

does the engine die or the pressure if its the engine leave the gas cap loose and see if it stays running the vent could be plugged is it loosing spark when it dies check it for spark is it fuel does it fire back up or does it need to cool off for a while like the coil is bad

Apr 26, 2012 | Honda 13 Hp 4000psi 4gpm Pressure Washer...

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If there is black oil coming from the bottom of the pump area there is a good chance it is either coming from the pump or the engine. If the oil is coming through the pump one of the seals is bad.

Unlike most brands the Black Max offers very limited parts for their pumps and depending on what model you have there is a good possibility that the oil seals aren't available. On the other hand, you should be able to find a pump to replace the one that you have at a very good price.

If I knew the model number of your machine I could better assist you in finding the correct replacement pump for your machine.

Oct 20, 2010 | Honda Black Max 2600 PSI Pressure Washer

1 Answer

What type of oil can i use

The engine and the pump can use the same oil. SAE 30 non detergent oil. No need to pay more for speciality oil. Check oil often and look for any unusual signs such as milky or foamy oil in pump which would indicate water leaking past seals. Good luck.

Sep 04, 2010 | Honda Black Max 3000 Psi Pressure Washer

1 Answer

Annovi reverberi triplex preesure washer pump

Usually when a pressure washer is pulsating, either one or more pistions are not pumping. Quite often one of the check vavles for a cylider has broken and will not seal, which means you'v just lost one cylinder, and now you're running on two (etc) If a pressure washer is allowed to idle too long, re-circulating the water, it will get hot, and then melt the plastic container on the check valves. Go to : www. You can order parts, and manuals.

Jul 15, 2010 | Annovi Reverberi 4000psi 4gpm Pressure...

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What type oil is used in the pump? Checked engine oil and it's full. The oil in the oump seems to be low

You should use what the pump manufacturer recommends. Typically a 30wt non-detergent (non foaming) oil. Do not over fill. If there is a sight glass half way is normal. Or if it has a dip stick follow the mark there.
Here is a great link for pressure washer parts and info
This link goes right to oil page:

Jul 12, 2010 | Honda 13 Hp 4000psi 4gpm Pressure Washer...

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