Question about Dewalt DXPW3835 - 3800 PSI Professional Gas-Cold Water Pressure

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I recently purchased a Dewalt DXPW 3835 Pressure Washer from Home Depot.... After 4 hours use I no longer get any pressure. After depressing the trigger, I get a second of pressure and then it just dies. I called DeWalt and they couldn't help and to take it to the Warranty Shop. They informed that they wouldn't be able to look at for 2 weeks so I took it back to HD and got a new one and this one does the same thing. I'm pretty sure it's probably a pretty quick fix but no one seems able to tell me on the phone how to do it. (and there is not any info in the manual pertaining to this) Any advice.

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6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 1383 Answers

SOURCE: I have a dewalt 3750

I worked at a tool rental center while attending college and learned many tips and tricks about Dewalt and other brand pressure sprayers. Your machine probably has a 13 hp honda and has max pressure of about 3500 to 3700 psi. Most of the problems that customers had were engine related due to severe working conditions including totally wet engine /plug, wet air filter, and or other problems that were easy to remedy. We would set the pressure regulator to minimum pressure and explained to the customer how to increase the pressure as necessary but only after the engine was completely warmed-up to running temp to prevent engine stall. Your machine has a throttle lever between the tank and carb that should be set to max if you are going to set pressure at or neer max range. Most cleaning jobs do not need much pressure. Use lowest pressure to get the job done. Your engine developes around 13hp at about 3600rpm. If you want to maximize the life of you sprayer, then use your machine at about 70% of capacity or about 2000 to 2500 range that will allow you to run your engine slower increasing lifespan. Your sprayer is likely rated at 4 gallons per minute so make sure that the tip is that capacity. The tip has the size stamped which would show the fan degree and flow in gpm. The wrong tip, say a 3.5 gpm will strain the engine to point of stop because the smaller tip increases pressure. Most engine stall is due to high pressure setting on new machines. Lower pressure when warming-up machine and use max pressure rarely when necessary to max life. Please email for other information/questions or simple tests to determine faulty parts, good luck.

Posted on Jan 30, 2009

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  • 942 Answers

SOURCE: My DeWalt Gas Pressure Washer Model DPD3100 is

Hi

Just try the following steps

  • Inspect the water supply connections
  • Inspect the drain hose
  • Inspect the water pump
  • Inspect outer tub for cracks or corrosion
  • Inspect the tub seal
  • Inspect the tub bearing
Good luck

Regards

PCmania

Posted on Jul 05, 2009

harlan301
  • 205 Answers

SOURCE: I have purchased a Dewalt 3800 PSi cold water

check to see how hot the water can be, ti should be on the unit or in your book. also your amps should be no less than 15amp, long core can over heat the motor. if your unit can't handle hot water it will melt the valves

Posted on Oct 12, 2009

LandaNW
  • 45 Answers

SOURCE: Hi, I have a Dewalt pressure

There are two common issues that will cause what you are describing. What you need to do is run the machine until it dies as you are describing. Then pull the spark plug and check for spark. If you do not have spark you have a failing stater. It is very common for this problem to only show itself after the machine warms up. If you find that you do still have spark try removing the gas cap and restarting. It is also common for a vacuum lock to occur due to the seal on the gas tank cap. In most cases one of these will be your issue. If not feel free to contact me at 800.247.8103 and I will help you to troubleshoot the issue further.

Sincerely,
Aron Kerr
Landa Northwest
www.landanw.com

Posted on Mar 10, 2011

  • 1 Answer

SOURCE: After running my dewalt pressure washer for a few

put gas!

Posted on Jul 20, 2012

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