Thank you David ! After not using my K5.7 for a long time I was also about to try and take it apart to check that the power was getting to the unit. After trying your advice for a few minutes without success - your mention of bleeding the water hose for a good 10 minutes got me thinking about where else could a tiny air leak get into the system as all hoses seamed good - then I thought about the now empty (upside down) soap bottle - maybe being empty was enough to trick the system - so I half filled it and within a minute of bleeding the water as per your video - the karcher was running normally !! Maybe my soap bottle is very old and may be leaking some air into the system - but filling it plus following your advice FIXED the PROBLEM - thank you !!!!!

Thank you sir! After not using my K5 for a year it didn't start up and I already read thru several repair instructions. Shortly before starting to take it apart, I ran into your video. Worked like a charm and saved me so much time - priceless. At least one more pint to book - already on its way.

This bloody worked!!!! What did we do before KZfaq and Google and people like you. Back to jet washing the car. Saved a pile of dosh too. Thanks for your help.

A Great BIG Thank you to Neil from Yorkshire who was so determined to thank me despite not having Paypay he posted £10 directly to me. Also a big thanks to all the wonderful grateful people whom thank me through my www.paypal.com/paypalme/Davidglad it makes helping people worth while THANK YOU ALL

This works. Every time I leave my machine for a while I have to follow this rigmarole. I would not recommend a Karcher machine to anyone considering buying one - over hyped.

You sir are an absolute STAR…I was just about to strip the K4 down, but you’ve saved me hours of work with this simple trick. Thanks does not seem enough….but THANKS anyway.

I tries this a couple of months ago with my K5 and it didn't work. I said I'd look into it again and try once more. As I was watching this video trying this with the water running the machine kicked back in again. Amazing 👏

well,i don't believe it,didn't think this would work for 1 second,buried my k4 in my shed and bought a new one,this was 2 years ago,came a cross your video and this worked instantly,brilliant,thanks David.

Genius! I had rebuilt the switch 3 times already after lending it to my mother-in-law. I couldn't understand why the switch was always failing for her. But I ran the water through it, and hey presto! Works without rebuilding the switch!! Cheers David - enjoy your pint!

Cheers David, just got the Karcher out of storage and no power. Looked on Google for advise and found your page, it worked a treat. We have donated the price of a pint as suggested. Thanks very much it saved us a small fortune, you are a star. Steve and Yvonne, Manchester

Thank you my mate!!! Not sure what model Karcher water blaster I have, but mine looks quite different to yours, and I cannot run the water through the nozzle like yours, but I could just run the water through the machine itself. I did this, and after a few seconds water burst out the front plug where I plug in the nozzles cable in. Then turned on the power, and boom, everything working again!!!! Thank you heaps My Man!!!!!! Lifesaver!!! The Mrs is especially happy as I could wash her car today.. :-) Happy Wife, Happy Life!!!

TIP TOP ADVICE!! Thank you kindly Sir! Come to France and I’ll buy you 2 pints !

Thank You from South Africa. Was about to take my K5.700 to the agents for repair when i found your video. Running like a dream. You are a scholar and a gentleman Sir.

Well worth the fiver I just paid for this little fix it gem. Thanks David, I turned my karcher on this morning, nothing, thought I was going to have to buy a new karcher and believe me this week, our waterfall pump which we have had 3 weeks has broken down the solenoid was too weak and our astralpool colour changing pool lights that we have had for 2 months also broken over the weekend so it could have been rather an expensive week what with the karcher. But we took your advice and it works...yippeee thank you for that!

Brilliant!! Thanks very much, I've bought you a pint. 😂 I actually paid £40 last year for the same problem, no wonder I thought I had it repaired cheaply. Thanks again.

My K2 wasn't working due to the air lock issue so called Karcher and they quoted £170 as its just out if warranty. Watched your video and you saved me from buying a new one. Thank you.

I'm a little lady living outside Vienna Austria where my husband was terribly ennervated that our Karcher didn't work one day. I found your visit and within minutes the Karcher was running strong and my husband was happy again! Many thanks for kindly posting this David Gladden, you gladdened our day! And Cheers!

Home ed tip of the day for my 10 year old son (and myself) 😊 Much appreciated. It worked and son has had a great morning cleaning down the patio.

I think I owe you a pint! I've had a K4 in my shed that has not worked for years, I've just done what you suggested, and now all is good. Thank you so much. Dominic Duncan

Thanks, David. I am Senior Electronic Maintenance Engineer and of course couldn't even think this kind of easy fault. Now it is working again.

Just sent you money for a pint. Thank you for fixing another K4 and saving me a fortune. Cheers David.

Hi, just tried your tip and I was delighted when the machine started up after running water through it for 10/15 mins, I was certain that there was an electrical problem such as a faulty switch. Initially I ran the water for only a minute or two but the machine did not start. then as last effort I let the water run for a longer period to my amazement the machine started. Thanks very much for the tip.

You are a diamond 👍 Got the Karcher K4 out of the garage, absolutely dead. Searched on KZfaq found your video and the Landy got a good clean. Many thanks 👍

Top man David, spent an hour or more trying to get my K4 started and then thought id check on tube. Glad your video was one off the 1st i came across💯After 3 attempts…… the jet wash started🤣 I owe you a pint. Thanks a million 👏🏻

Genius! Like others, i was about to look for a replacement for my K4. You saved me a wasted day and circa £300, pint on its way, cheers!🍺

Was on my way to buy a new one... thought I’ll quickly check KZfaq. Definitely owe you a few pints all the way from Australia!! Legend.

David, you're a star, just did as you say with my non-starting Karcher K5.700 and it worked a treat. I've just sent you a wee donation. Have a pint on me my friend. Thank you.

I too can’t thank you enough. I tried two 13amp fuses I had and when they didn’t work went and bought new ones which didn’t help either. Your advice did the trick so many thanks

I had the opposite problem, my K5 would not switch off. But it was a problem in the same area so I thought I would give it a try. The result is you're officially a genius. Thank you thank you you

thank you very much for sharing this tip . just want to let you know that this tip has worked twice for me on two different karchers a k4 full control and now a k5 premium . i thought on both occasions they had been run on an extension lead and burnt out the motor capacitor and was just about to strip the k5 down to replace the capacitor and remembered this video so tried it and it worked . absolutely great guy great tip saved me a lot of work

Sir, you are amazing. Thank you so much for that tip my K4 works a treat now. Living in Lanzarote its so difficult to find anyone to repair it, so you saved me buying a new one. You are a genius, wish I could buy you a pint🍺 thank you so much.

It’s great that this fix can work, but it is nothing to do with removing an airlock! There is a pressure switch that turns the motor off when you release the lance trigger, this is what stops the motor moments after you turn the power on when machine is working normally. When you squeeze the lance trigger the pressure in the hose is released causing the switch to close and start the motor. This switch can stick in the open position preventing the motor from running making the machine appear to be broken. By running the water through the machine with no obstruction on the outlet it can force the switch return to it’s closed position as the mains water pressure assists the internal spring pressure. I know this because it did not fix mine, only after stripping it did I understand the mechanism of failure, and why this fix might work. Keep up the good work :)

Great tip...the airlock can happen if you inadvertently turn the power on with either the water not connected or not turned on....always ensure you switch off the Karcher before disconnecting the water after using the washer.

Omg. Worked a treat! I was about to buy a new one. Changed the fuse etc. Then watched this. Awesome. Thank you 😊

You sir are a star….. you have saved me £300 and a marriage. Have a good day.

Fantastic. I took the motor out of mine trying to find the problem. I thought it was the loose wire. Wish I watched your video first

Looks like I owe you a pint!! Thought it was the fuse first, checked that! Then watched your video! Thank you very much!

I can't believe it was something so simple!! I've sent you a pint as a thank you.

This is solid advice! First thing that comes to mind its electrical fault. So simple! Ran water for couple minutes and its back alive. Thanks David

Dear Sir:). I lost all hope. I let the water for too short and after switching on no luck. Then again for longer and bingo! Thanks a lot! Old K2 owner

I got karcher 5 and only used few times. Tried to use other day did not work. Checked fuse, cables but every thing was working except the unit Followed your advice and it worked. Thank you David come for a pint anytime.

Just sent you a pint my friend, was pressure washing the patio this morning ,and the hose popped off, motor went manic, though jeez its knackered. It would not turn on, though bugger naffed the motor and off to homebase i go for another. A quick google and found your vid. Enjoy your beer! Lee

Thankyou so much we were ready to order a new one. It kept stopping and starting, then wouldn't switch on at all, come straight here and found you... Brilliant. Pint sent cheers 🍻

Thank you Bernhard for the pint on the 22 March as your the only one that has thanked me this month

I was sceptical at first but this method worked perfectly. Thank you very much, I really appreciate your video

Hi David - looks like I owe you a pint.... followed instructions and my K4 is now working perfectly

Wow.... I have an older K2 model and thought it was trash.... ready to buy a new one. I came across your video and thought I'd give the quick fix a try. It worked like a charm. I can't thank you enough.... any time your in Chapel Hill NC give me a shout and I will definitly buy you a beer!!!!

I tried this after our K5 wouldn’t start, thank you very much for this great tip maestro. Kind regards Colin

One pint on its way… Thank you .. Thought I was going to buy a new one. Cheers

Just did it and it worked 👍🏻 We don’t have pints here in Munich but I owe you a ‘Mass’ in the Beer garden 🙂

David thanks man followed your tutorial my K4 wasn't working but it is now. Never had a problem with it before. I honestly thought this simple trick wouldn't work but it's now back to 100% working 👍👍👍

Fantastic - and it works. Thank you so much, The key, as you say, is to leave it running through with water for at least 10 minutes. Cheers David - you are a true star!!!

It needed 15 mins but this fixed a K2 - awesome!

I JUST DID WHAT YOU SAID. AND IT WORKED. THANK YOU SO MUCH. IT WAS JUST ABOUT TO GO IN THE BIN. $600.00 AUS SAVED. THANK YOU THANK YOU THANK YOU. 😁

You sir are a gentleman,. I was pricing a new k4 when i came across your channel and your advice worked like a dream, i owe you a pint cheers👍

Big Thank you to you David! Enjoy the pint.... when the pubs reopen on Monday!! least I could do as I was thinking I was going to have to replace my K4 or get my arms and legs ripped of by giving it to Karcher to fix. You are the best!

Thanks so much!! Thought we were going to have to scrap it! Sending a pint now!

My karcher was exactly the same, i was going to bin it until i watched your video thanks very much 👍

Brilliant, worked first time. I could not detach the lance on my model so I cable tied the handle to let out water had a cup of tea, returned switched off water switched on the power switched water back on and it worked. How do I buy you a beer?

Thanks David! I threw out my last pressure washer and was thinking I might have to do the same for my current one. Your tip worked like a charm! Cheers!

Thank you so much. Had changed the fuse and wasted so much time. You're a star. Thanks for sharing

Amazing!!! I’ve not used my Karcher 620M since 2005 (long story). Attempted to use is a few weeks back but nothing at all...assumed it was ruined. Just followed this tip, and it sprang into life - looks like another pint for you David!!!

Brilliant! Followed instructions with my K4 and it worked a treat. Thanks a million

Just had k4 won’t turn on working now well done Dave

Great advice and it worked! Seconds away from ordering a new one and I found this brilliant video! Thanks a lot!

Thanks Dave , I did this yesterday and yes it worked , after checking the fuse in the plug and trying to eliminate what was causing it to not start , I watched your video and it did .cheers .

You Sir are a bloody legend. You’ve made my day week even year.if I ever bump into you I’m getting you sloshed.

Works on the big electric ones too!! I WAS at a loss. Dude, you ROCK! As an aside, it threw my outside outlet breaker

Thanks a lot David ! Your suggestion is amazing ! Best wishes ! I am from Brazil. I wish you all the best ! Many thanks 🇧🇷 🇧🇷 🇧🇷

Can’t thank you enough for the trick! It worked wonders!! I have been trying so many different things and it wouldn’t work, and your tip saved me so much time and money! Thank you once again.

thank god i watched this, done this and it worked ,i bet some so called repair chaps have robbed hundreds of people,if i seen you mate id buy you 10 pints.thankyou.

Just tried it on a K4 compact and it worked brilliant didn't have to strip it down I would buy you a pint if you lived in Lincolnshire cheers David

Took 2 seconds here! You are the best. Pint incoming! 🍻

Good job. Thanks for sharing. Next beer is on me..

Wonderful. It worked on my Karcher 3 perfectly. Had to give it the full 10 minutes, as had previously watched a different video that said 5 and that didn't work. Have just bought you a pint. Cheers!

Fixed in 5 minutes. Wow that saved me a mission. Thanks mate.

Top tip my friend. There's one waiting for you at the bar. 🍺

Thanks. The pint is in the post.

Yup... you're the man! Worked like a charm, and I was indeed about to go buy a new one. Things are made so cheap nowadays that I figured it just broke 😄

You're a diamond geezer mate,I was on the point of buying a new one when I came upon you. I'm gladly sending you a couple of pints,and I'll recommend you to one and all.CHEERS !!

One more pint for you! Super solution. Bravo!

Many many thanks. You saved me having to buy a replacement Such a simple but brilliant bit of advice. Drink on me sir.

This will sort it in most cases. It can also be a fuse in the plug, a capacitor or a problem with the auto stop function.

It really works. Mine started after 1 min. I heard the air bubbles coming out. Thank you!

Thanks David. Saved me a fortune. Yes it worked 1st time. Thanks again David. Ian from Aberdeen Scotland 🏴󠁧󠁢󠁳󠁣󠁴󠁿🇬🇧

Thank you I did as you said and it worked just like you showed in the video. It was in the shed for a long time and I was going to pull it apart. You saved me time and money. Thanks again

Works - pint delivered- cheers from Switzerland

Such a simple fix to save money, thank you . You are a star

Thanks a lot Sir. The switch just protect the pump for no running without water. This video is very helpfull

Thankyou! This worked. Thought yet another pressure washer broken over winter & this resolved it 👍

Thanks a lot for sharing this fix. I was ready to dismantle completely the Karcher, but this this trick helped to save a lot of time and money.

This actually works I thought mind was dead absolutely thought no chance this would work but boooshack she’s back on, thank you very much I owe you a pint 🍺👍🏻👍🏻👍🏻

Instructions were great. Got mine going in no time . Thanks

Your a star 5 minutes it took to get if from dead to normal working following your advice cheers top man

a gentleman and a scholar 👍

Yep... That's a pint I owe you too! Cheers

Brilliant!!!! Fixed my k4 straight away

Mine was the same, your fix was short-lived. worked about 5 times.. after that, I could let water pass-through for an hour and it would not start. So it ended up having to go to Karcher

To thank me with a Pint www.paypal.com/paypalme/Davidglad

Awesome sir! I owe you a pint, i was devastated when my karcher seemed broke,you saved the day