Deville Excel Model # EXHA2425 Pressure washer
I have a deville excel Model # EXHA2425 pressure washer. I went to the deville website (devap.com) which forwarded me to the dewalt site w/ exploded diagram below. I am having problems with intermittent pressure production. If I squeeze the trigger sometimes it will have pressure, somethings it will not. If I repeatedly squeeze, then release the trigger sooner or later I will get pressure. Someone on hear had told me it was a "bypass valve sticking". I have an exploded diagram of the unit, but can not find a bypass valve. Is the bypass valve the same as the part #30 unloader on this exploded diagram?? http://www.dewaltservicenet.com/Products/DocumentView.aspx?productid=47814&typeId=12527&documentId=31364 Is this something I should replace and be done with, or can I take it apart clean it, and put it back together.
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take off the pump unit start the engine, and see if it runs good if it does then change your pump if not then you must have busted a piston ring you can take it to any auto mechanic to replace the ring.
yes pump can be taken apart but when you do it will be to your best interest to rebuild with new valves and o rings. Be sure to check the housing and make sure it isn't cracked. If it is cracked throw it away and get a new pump.
Many of the excel units don't come with a pressure relief valve but instead a thermal relief valve, it really depends on the model number of the pressure washer. You should only replace the thermal relief valve if it is leaking.
Devilbliss / Excell pressure washers in this model number range use a Honda GC160 engine. Information on this engine can be found here: http://www.excellpressurewasher.com/documents/pdf/gc160.pdf
This web site also has information about the pump and related parts just look for your model number. I find that pressure washer manuals have very little information about the engine. Small engine / mower repair shops in your area will be happy to give you free information about the where the fuel line attaches. Your engine has a black plastic fuel pump with hoses going to tank and carb. This fuel pump is powered by engine crank/vacuum purssure so there is a third hose from the fuel pump connected to the engine block. Good luck on your repair and email if you have a question or if you have a different engine than mentioned above.
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