Question about Garden
As soon as i fit a lance to my pressure washer the motor cuts in and out continuously. if i take the lance off the motor runs perfect
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Posted on Jan 02, 2017
SOURCE: pressure washer
There are many reasons why there is no pressure. The simplest one is try a new lance. The lance you say it is not blocked, but it could have a wider hole with wear and tear.
The second most possible reason is, faulty valves. The suction valves are the most that give low pressure when they are faulty. To check the suction valves, put on the machine in the normal way and as it is working, disconnect the water supply. Than check if air or water is blowing out from the inlet. This is not 100% but you can have a picture of the function of the suction valves.
On the other hand if you do this exercise with the outlet, after removing the gun, you can check for the delivery valves. If you feel suction at the outlet, than the delivery valves can be faulty.
If all is correct, than there must be a fault in the swash plate. This could become loose and so the pistons will stop moving. Also another fault could be broken springs.
Also if the machine is leaking, the high pressure and low pressure seals are damaged. This also lowers pressure.
Other faults are related to the famous spill valve. Also faults could be to internal water leakages, due to corrosion in heads. Finaly I like to add that a faulty electric motor, could also not deliver enough rotation and power, and this also reduces pressure. This could be rewinded or changed for a new one.
Posted on Nov 05, 2008
SOURCE: Sporadic pressure
OK. Pulsing on and off is quite common. Unfortunately, it can have several possible causes.
If the machine pulses while you are squeezing the trigger, and there is water coming out of the jet, then most probably the jet is partially blocked. It may or may not be possible to clear it...
If the machine pulses when you are not squeezing the trigger, then there is a leak somewhere. And this is where it can get complicated because there are several points in the pressure system where leaks can occur. The simplest to diagnose (and quite common) is a leak in the trigger itself. If you've got even the slightest drip from the jet while the trigger is closed, then this is the cause of the problem. On some guns you can change the trigger, on others the whole thing must be replaced.
If there's no drip from the jet, the next question is: is there any leak coming from the machine itself? Again, even a very slow leak will be sufficient to cause the problem. Basically, a pressure seal has failed and, depending which one (or more), this will allow water to leak from the high pressure side of the system either externally (in which case you'll see it) or internally (back in to the low pressure side, which you won't see). You may need a professional to sort this out for you. If so, don't be surprised if they change all the seals in one job because the parts are cheap compared with the labour.
I hope this helps. post again if you need more details.
Posted on Mar 22, 2009
You most likely need to set your valve clearances. If it is hard to
pull over or the recoil snaps back after starting your valves need to
be set for sure. This may not be the entire problem but it is a good
start. Also change the spark plug, a bad plug will cause odd problems
and is too cheap not to eliminate as a source. In addition check your
fuel, pour a little out into a white container (I like spray paint can
caps for this) and look at the color. If it is yellow to orange it is
bad. You can pour it into you car, the car electronic sensors will
compinsate for it quality but a small engine can't. Use a NGK BP6ES or
10mm open end wrench
14mm open end wrench
1 long shaft screw driver or rod
1 spark plug socket and ratchet
Remove the spark plug and the valve cover. Pull the recoil over slowly until the intake valve opens (intake is closes to the carb and it will go down when it opens). Now put your long screwdrive down the spark plug hole. Slow pull the engine over until the screwdriver handle is at it highest point, this is top dead center. It may take a few attempts. Now check your valve clearance between the rockers and the top of the valve. The intake should be .006 and the exhaust .008, both can be +/- .001. To adjust: hold the large nut with the 14mm then loosen the small one with the 10mm. Lefty loosey. Now turn your large nut until you get the correct setting and then tighten the small one the lock it in. It may take a few attempts and alway reverify your setting after you lock it down. Once done, find top dead center again and reverify. Now your valves are set.
Posted on Mar 31, 2009
SOURCE: Karcher Motor Pulese On and Off
hi mark, you do have a problem with the lance.
you need to disconnect the lance and straighten a paper clip and insert down the nozzle end.
use the machine to wash the dirt in the nozzle backward down the lance.
Dirt only in nozzle end.
if still no good, purchase some nozzle cleaners and file out nozzle very slightly.
Posted on Jul 04, 2009
SOURCE: i have a petrol pressure
Your unloader on your pump is working but when you ask for the engine to work it struggles I would check the air cleaner the passage in the carburetor could be slightly plugged starving the engine for fuel check and make sure the choke is fully opened your problem is for some reason the engine isn't providing the horsepower needed maybe try backing off the pressure regulator.
Posted on Feb 05, 2011
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