Briggs & Stratton

I have a B&S motor w/ a AR xmv series pump. While engine is running pump will spontaneously begin sounding as if the wand trigger is depressed when it is not. If I depress it and release it it then stops only to repeat this action in a minute. I have been turning the unit off completely until I need water because I’m afraid to cause damage. I had never noticed this before and seems that it would build pressure and cause failure. Doesn’t seem normal any ideas?
Experienced gardeners share their insights in answering this question :
It is normal,It is the governor on the engine that does this.

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If this is a gas powered pressure washer, then the pump is not going into by-pass mode and the pressure build up is overloading the engine causing it to shut down.
Surging occurs when the pressure is fine and then weakens. It is caused when the flow rate for the pump cannot be supported by the water supply. Problems can mount from there so it is important that it is dealt with as soon as possible.
How Do I Tell If My Unloader Valve is Bad? In most occurrences, the first symptom of an unloader valve going bad is no pressure from the wand when the trigger is pressed. This happens when the unloader valve gets stuck open and does not allow water to enter the hose and trigger.
If the machine is pulsing when on standby, is the garden hose supplying the pressure washer fully uncoiled? If the machine is pulsing whilst in use, it may be that the accessory you are using has a blockage. Clear by soaking the accessory in warm soapy water and then rinsing out under the tap.
Often times, a machine producing low pressure will surge, cycle on and off, or continue to run. This typically indicates that the machine is losing pressure somewhere, such as a leak in one of the lines or inside the case of the machine.
DON`T Let the Machine Run Too Long Without Pulling the Trigger. Pressure washers operate under pressure, and that pressure needs to be released by pulling the trigger. If you let the machine run for two minutes or longer without spraying water, then you could damage the pump.
Without an unloader valve, the water pressure continues to build up in the nozzle, potentially causing a very unsafe situation. The increase in pressure – without an unloader valve to regulate it – could cause the water pressure to go over the PSI limit, potentially damaging your pressure washer`s pump.
Pressure may decrease if your packing is worn out or if there are abrasives or severe cavitation (bubbles) in the pumped fluids. This can be caused by an inadequate amount of water and/or a lack of proper filtration. To fix, install the proper filter.
No matter how powerful your pressure washer might be, it`s never a good idea to leave your machine running for too long because doing so will increase the risk that it will overheat. Instead, most professionals suggest using a pressure washer in intervals of three to five minutes.
If the drain control is broken or the drain is clogged, the washing water won`t be able to escape and the washing machine will stall trying to start the rinse cycle. You may be able to clean and readjust your drain control components, or you may have to replace them entirely so they can start functioning again.
Water leaks and inconsistent behavior are also signs of a potential failure in the near future. González: The typical signal when there is an unloader malfunction is a reduction of flow through the nozzle, which results in pressure loss. Dean: Typical symptom of an unloader failure is a sudden smooth pressure loss.
Some of the most common faults that will make your washer stop mid cycle include thermostat failure, problems filling up with water for the rinse cycle, or even pump problems that prevent your washer from draining. One thing that you can check yourself is the lid switch.

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Sump pump hums and then kicks breaker. Will not pump. I cleaned everything, still have problem
ANSWER : Pump motor is jammed causing overload and resulting breaker trip. Try to turn the pump shaft by hand, it should be very easy to turn. If there’s any resistance check for blockage.

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Pump cycles frequently – Sta Rite Industries Shallow Well Jet Pumps, 1/2 Hp
ANSWER : Your tank needs more air in it … do you have a air valve standard tank or do you have a tank with a rubber bladder? I suspet the former and your air valve is sticking.

Shut off the pump, drain the tank (which will replace water with air) and then restart the pump.

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I have a 1/2 horse wayne shallow well pump. At times the water in the house slows to a trickel. This will happen for about 40-120 seconds then the pump seems to kick on and the pressure is restored. I have replaced the high low switch and the problem persists. Please let me know any thoughts on the problem. Thank You
ANSWER : Check air in your water tank should be less than you’re cut in pressure..

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I have a pressure booster pump installed which turns on automatically when we open the tap and turns off by itself when we close the tap, but when power goes and comes back(common in india), the pump will turn on even with no tap opened and does not turn off automatically and goes on running, some kind of airlock problem I think, when we just shut off and on water input several times, it again starts working well
ANSWER : Check to see if the output pipe has water in it when the pump swutches off the pump needs to be primed at all time what we normally find cases like this is the pump is higher than the supply or there is an air pocket on the output where the pressure sensor is

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Grundfos MQ3-35 hums loudly and does not pump. Alarm light does not go on. Pump seems “happy” but when a tap opens and the pump turns on, there is no boost in pressure and the pump just hums loudly… definitely a different noise from normal operation. Seized? Vapor lock? Any help is greatly appreciated.
ANSWER : Hi, seems like the capacitor gone bad or a seized motor. I just fixed mine cranking the motor manually with the use of a flat head screwdriver. In the back of the motor there is a rubber plug about the size of a dime. Take it off an insert a long flat-head screwdriver and crank the motor clockwise a few turns. Remove the screwdriver and try to operate the pump as usual. Good luck …

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My pool pump makes a buzzing noise but there is no water circulating into the pool and no suction what-soever. What could be the problem?
ANSWER : First, Check your voltage at the terminal with a voltmeter. If it is within 10% of what is stated on the name plate, try the following suggestions. If is is more than 10% off, call an electrician. Common problems that cause this humming with no suction in these pool pumps are:-Take the pump apart and look for rubbing that could be causing your pump to tighten up. -Check for a seized motor. If the motor has seized up, you will have to have it repaired or replaced.-It could be a winding switch or capacitor problem. Again, a pro will have to service it.

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The pump will not continue to run after starting, it runs for 5 seconds and then stops, until the next attempt to detect water, the pump is sitting in three feet of water. The pump will not continue to run after detecting water.
ANSWER : CLEAN AIR LOCK HOLE

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We have a Flotec 3/4 HP submersible pump, it was already here when we moved in, we have lived here for 3 yrs, so we dont know how old it is. After living here for 2 yrs, it started to get very noisy, like a groaning noise. We replaced it w/ a l/2 HP Wayne(our mistake) We got water in the basement b/c the wayne pump quit running. We put the Flotec back on. Trying to find a replacement, but stores are all out. Question is, do you think we can rely on the Flotec that is making the strange noises? Thanks, Chris
ANSWER : Take strainer off to see if fravel stucj. if not, motor bearing may be shot. I would replace. I like wayne.

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