Question about Northstar Pressure Washer 3000 PSI

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Replaced al of the valves but still will not operate on high preasure. Will build to high preasure only for a couple of seconds then back to low preasure.

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  • richard_hoyl Aug 05, 2010

    would that be the unloader valve or the safety relief valve?

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Your bypass pressure valve is weak and needs replacing,its letting water pressure bypass the pump going to the pressure gun

Posted on Aug 05, 2010

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My 07 ford e250 4.6 ac system my low side at idle 75 n my high side is 150 wats going on


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My '99 Wrangler Sport used to start on the 1st couple cranks. Now it takes about 20 cranks or i can turn the key off and on a few timeswithout cranking the engine and then it will start. This is only when...


You are correct. the fuel system is loosing preasure while sitting and then it takes time for it to build back up, you will not smell the fuel because its the preasure regulator valve in the fuel pump, so it just drain back into the tank,this is common on chry,and jeeps. the preasure regulator in the pump is bad, you will need to replace the pump asm. this will solve your starting problem, hope this is helpful.

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My hot water heater is leaking out of long drain pipe


The long drain pipe is the expansion relief overflow, it is too hot. The thermostats are too high. Or the valve is shot. Do you notice the water being too hot to touch? You might want to drop the temp a couple notches. There are thermostats on both gas and electric units. Also, do you have hard water? I have seen hard water build up on the expansion valve and cause it to leak, you could open that up for a second and let out some water to see if it will unclog it. Careful! Hope this helps.

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Preasure washer want preasure up. engine runs find but wand want kick into high preasure


Hello,
Start the engine on your pressure cleaner then with your lance change it to low pressure as if you were applying detergent i think your model has the 5 different quickfit jets put the large derergent one in and give it a hit...
Then put the high pressure jet back in and see if it will build up pressure now, if this works then your bypass/unloader valve is sticking in the head it will need removing and cleaning up and lubricating...

This is the most common cause of not building up pressure and is usually caused by sitting around and not using the pressure cleaner regulary...

Good Luck!!! Hope this helps

Kind Regards
Brad

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My fuel consumption is very high


a couple of simple checks first. check tyre preasures, low preasures will make the car harder to roll along the road. also, are the brakes binding?

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Where is the thermal valve for the ac located on


Not shure what you mean by"thermal valve" There is a low preasure switch on the accumulator(big tank) that turns the ac clutch on and off,and shuts system down when to low on freon. there is also a high preasure switch that shuts down the system on the compresor.The only other "valve" would be the orifice tube or somtimes refered to as an expansion valve- this would be in the high preasure line, and can be found by looking for a spot in the line that has dimples. If this is the part you are trying to replace, you really need to take to a shop, as the freon must be recovered by law,and can be dangerous to handle if you don't know what you are doing.

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1 Answer

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Do you have gages you can hook up?check preasure when A/C clutch is on preasure low should be about 30 and high should be about 180,if high side is higher you got a blockage some where usealy they will plug at the recever dryer or the expansion valve

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1999 Mercury Marquis air conditioner blows hot air. did red dye leak test. ck'd all fuses and relays. recharged but still blows hot air. could it be one of the two switches?


yes it could be, do an resistance and continuity check on each switch to see if one is malfuncting. it could also be the wiring to the compressor high and low preasure switches. if the system is still low opr over filled on refrigerant the low or the over Psig. preasure switch will not alow the compressor clutch to engage, or will try to than disengage quite quickly to protect the system. you need to get a gauge set hooked up to the high and low side of the compressor to get actual readings to know if the system is low , high or in between operating perameters.

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