My Karcher 7.91 is leaking water from the clear plastic hose which rises to the detergent bottles, it fills up the detergent reservoirs and the pressure is very poor. It looks like the start of this plastic pipe is in line just before the high pressure water outlet,i did think it may be blocked but it still comes out of the hose (just), failing that i recon the pump may have gone t-ts up !
I think it over-heated and stopped. I see that the capacitator's top has come apart from the body.
The motor does not start at all.
Can you advise me?
Chris Backwell, March 2016
It is a valve that needs to be replaced by Karcher service centre I know because that is what happened to mine
Bill, June 2012
It is a faulty valve which needs to be replaced by Karcher at a cost of £30 plus part cost of £28
Bill in Duns, June 2012
my kercher 7.91 is pulsating when set anything above MIN, have it 2 years and has had very little use. it isuseless in present state. it is not airlocked and pressure seems ok with extension to lance removed.
