Troubleshooting Pressure Washer and Power Washer Problems and Pressure Washer Tech Tips from Powerclean 

GUIDE TO SOLVE PRESSURE WASHER AND POWER WASHER PROBLEMS 
Listed are some common pressure washer problems with causes, solutions and discussion
Find the problem with your pressure washer or power washer then click on the link to find a solution.   Click the discussion links for technical tips and more information.

These service tips are for the cold water pressure washer.  If you have a hot water pressure washer click here for servicing tips for the hot water portion or stand alone hot water module 


Low Pressure Worn or incorrect nozzle
Unloader is by-passing
Insufficient inlet supply
Vibration in pressure hose
Plunger(s) broken, or worn
Belt slippage
Water leakage from bottom of pump or pressure hoses and fittings
Water spraying out in all direction around the spray tip 
 
RPM on motor is too low 
Oil Leaking From Bottom, 
Sides or Back of Pump
Crankcase seals or o-rings damaged or worn
Plungers running sideways

Overflowing oil
Worn crankshaft seal
Bad Bearing
Loose or cracked drain plug/sight glass
Noisy/Rough 
Operation
Restricted inlet or air entering the inlet plumbing
Stuck inlet or discharge valves
Mechanical damage in crankcase
Inlet water is too hot
Water in the Oil (Milky) Worn Seals and Packings
Broken or Scored Plungers
High inlet pressure

High humidity / Water splashing on top of pump
Water Leaking From 
Under Pump
Worn Seals and Packings
Broken or Scored Plungers
Intermittent or No 
By-Pass (Cycling)
No by-pass valve (unloader)
Unloader Leaking
Pump Cycling
Oil Leaking Between 
Crankcase and Manifold
Worn Oil Seals Pressure Drops After 
Period of Use
Nozzle is clogged
Worn packings
Dirt in unloader
Frequent or Premature 
Failure of Packings
Plungers worn
High inlet pressure
Excessive inlet temperature
Unloader is over-adjusted
Abrasive material in pumped fluids
Running pump dry
Chemical / Soap Injector 
Not Working
Wrong nozzle
Adjustment closed
Plugged orifice in body

Plugged filter
Ball and cone spring damaged or missing
Pulsation (Low Pressure) Fouled or dirty inlet or discharge valves
Plunger(s) not moving
No Pressure Pump not turning
Inlet valves damaged or broken
No nozzle 
Unloader by-passing
High Pressure Spike Unloader over adjusted

Need a parts manual or servicing guide for your pressure washer pump? 
 Click here for links to major pump manufacturer information

Need service for your machine? Click here for pressure washer service in Vancouver Lower Mainland, Metro Vancouver and GVRD of British Columbia, Canada, including Vancouver, Richmond, Coquitlam, Port Moody, Tri-Cities, Langley, New Westminster, Surrey, Delta, Ladner, White Rock, Burnaby.


Pressure Washer Power Washer specialists with over 20 years in the pressure wash industry!

SOME OF THESE OPERATIONS CAN BE EXTREMELY DANGEROUS.  YOU ARE WORKING WITH HIGH PRESSURE EQUIPMENT. 
IF YOU DO NOT HAVE SUFFICIENT TRAINING IN THESE PROCEDURES, WE RECOMMEND YOU SEEK ASSISTANCE FROM A 
QUALIFIED TECHNICIAN 
NOTE:  Our troubleshooting guide is a work in progress.  We try our best to give up-to-date accurate information.  
Please check back for updates,
Trouble shooting for hot water pressure washers please click here

   

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Having trouble with your machine?  Quite often it's a quick and easy fix. 
Click for  trouble shooting guide

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