20 Most Recent Dewalt DPH3100 Gas Pressure Washer Questions & Answers

Hello, These units use a venturi to inject soap, where the tube goes onto the brass barb, that should unscrew and there is a little ball bearing and spring in there that sometimes stick when thay have not been used for a little while, if you clean the ball bearing up with some steel wool and lube it up and reassemble, 9 times out of 10 this will rectify your problem Hope this helps, Brad

put gas!

You can download a new manual for the unit at either www.dewalt.com or www.allpartsinc.com

The Dewalt 3100 came with 2 different pumps. The Blue Cat pump and the oil free pump that was made by DeWalt. You may just have a bad Thermal relief Valve on the unit.You can find the parts diagram at www.allpartsinc.com

If the unit hasn't been laying on its side or front for a prolonged period of time your problem is with the float and/or needle valve in the carburator. If the float is damaged or the needle valve or seat isn't able to close fully, gas will continue to flow into the float bowl then into the cylinder where it will seep down into the crank case and contaminate the oil. Best bet is to buy a rebuild kit for the carburetor but check that it comes with the float, some kits do not have floats in them and the float must be bought as a seperate part if you need one.

Sir, there shoud be a just a nut to remove. Unless it has a soldered cap on the end? If so ... you have to be a little handy. You can use any type of small piping which will replace the old rod and just cut to size needed. You can drill a hole through and cotter pin to keep wheel on. (That's what I do... )

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

Sounds like a fuel problem eighter a filter or you have debrie in your fuel tank thats cloging the inlet from the tank to the carburtator . Its that or a problem with the water pump . That could also be clogging and putting exesive back prressure on the engine shaft causeing stalling . What dose your water flow look like do you loose that first before the engine starts to bog down or dose the engine go first and the pressure follow . Also do you winterize the mechine i owen and repair many washers if you need more info you need to give more pier_j

The Dewalt Part number for the carbarator is 285807-24 and costs 112.00 through DeWalt.
It can be ordered from them using this link:
http://servicenet.dewalt.com/Parts/Detail/245592

Now, if you get me the Brand, Model, and Serial Number OFF THE MOTOR ITSELF, I'm sure we can find it cheaper, especially if this is a Honda.

I hope that helps.

clean gas tank with a good detergent and clean the carburetor with can of carb. cleaner

You need to keep the trigger pulled every time you start and you need to run the water for 3-5 minutes wide open before you start. Zero air should be in the line or this could cause it to **** out. You probably damaged the pump at this point.

if it runs with starter fluid it can really be only 1 thing - carbureation (gas flow, fuel filter or pluged line