I have a dewalt D25600, where do you add the oil and what oil do you use?

If it has a dip stick, add oil through that slowly checking constantly not to over fill! Best of luck!

Go to www.2helpu.com

Could be that it needs a new seal on the piston. Sometimes the piston tube is worn out also

Probably not. The heat and releasing smoke part is concerning. When brushes fail either one of two things happens. Either the tool just quits or if worn down far enough it can short out the armature. You may have a bearing (possible armature bearings) getting ready to lock up.

Dewalt claims that motor oil will cause carbon deposits to form on piston/cylinder head and on the inside of the discharge tube. I see carbon deposits on most all compressors that come in for repair. The carbon is not reason for repair. Usually forgot to add any oil causing rod failure. I believe that most compressor oils are just mineral oil. If the climate in your area is moderate, and you do not use the unit for 8 hours a day, motor oil will work just fine. The crank is steel and the piston rod is made of aluminum (no bearing shell). What makes the unit last longer is change the oil more often (holds very little oil). Good luck

Hi and welcome to FixYa, I am Kelly

From reading everything I can find, i.e User's manual & parts manual the only thing you add oil too is the engine. The pressure pump does not have a liquid sump.

You can look at parts here detail D:
http://www.ereplacementparts.com/dewalt-dpd3100-pressure-washer-parts-c-1009_7440_7445.html

So too add oil to the engine you would remove the dip stick from the crank case located on the opposite of the side of the engine as the oil sensor.

I recommend you use 30 WT SAE oil for 3 oil changes then on the 4th oil change use an HD 30 WT oil. The oil drain plug is located in the center of the side of the engine crank case base. On the 5th Oil change switch back to SAE 30 WT oil. Oil brands are not really important. They all have to meet SAE the same standards to carry the label of SAE. (Yes you can use a generic 30 WT SAE oil )
Thanks for choosing FixYa,
Kelly

Could very well be. Did you check the oil level and condition of oil? If its too full or if its light brown milky, then water has entered crankcase. Pressure washer pumps cannot stand to ever let run dry. Even a little. Also excessive idling will overheat pump if it doesn't have a thermostatic relief valve that allows some more cool water to enter pump.If it doesn't have one add one. Find your PUMP mfg and model number. IF it's pumping good now and no leaks, quick replacing the seals will save big future repairs. www.pressure-washer-parts.com has lots of info on many pump manufactures. Or get some seals from dewalt.

take it to a repair shop.could be broken wire in lead,could be burnt out armature,could be crook trigger switch,try a new plug on the lead

Cat pumps make their own oil. You can purchase it at most Carquest parts stores. If the Honda is gas, 30w motor oil

Dewalt recommends synthetic oil in their compressors. The dewlat part # 5130427-00 quart, and 5130702-00 for a 4oz size. Available at www.dewalt.com or their service center. I have been using the Lowes brand of synthetic compressor oil. Kobalt oil sells for about $7 and works great. If you do not use your compressor all day like I do, you can use the standard grade of Kobalt compressor oil that sells for around $3. Synthetic oil is for extreme conditions. Good Luck!