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pressure washer hard to start? #4534908
10/05/17 08:07 PM
10/05/17 08:07 PM
Joined: Nov 2009
Posts: 4,941
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 4,941
Houston, Texas
i bought a pressure washer with a Honda gx390 and compared to my Honda generator with a Honda gx390, this thing is a beast when it comes to pulling the starter rope. I always make sure I prime the pump before starting and I've heard it helps if you hold the trigger down on the wand when starting? Not sure what that does though I've never tried it.

Last edited by motor_oil_madman; 10/05/17 08:07 PM.

2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: pressure washer hard to start? [Re: motor_oil_madman] #4534914
10/05/17 08:14 PM
10/05/17 08:14 PM
Joined: Jul 2005
Posts: 30,416
NY
demarpaint Offline
demarpaint  Offline
Joined: Jul 2005
Posts: 30,416
NY
I have the same engine on mine. Trigger and hold the wand when you fire it up, it will make your life a lot easier. Make sure you have the water running and the wand pointed in a safe direction.


God Bless Our Troops

Re: pressure washer hard to start? [Re: motor_oil_madman] #4534918
10/05/17 08:19 PM
10/05/17 08:19 PM
Joined: Apr 2015
Posts: 6
NYC
Tkonrr Offline
Tkonrr  Offline
Joined: Apr 2015
Posts: 6
NYC
I agree, holding the trigger in helps while starting it. My friend has a Craftsman pressure washer with the Honda gx 390 engine. It became nearly impossible to start or even turn over due to massive resistance on the starter cord. Turned out it needed a valve adjustment after a few hours use when new. Starts up easily now.

Re: pressure washer hard to start? [Re: motor_oil_madman] #4534939
10/05/17 08:36 PM
10/05/17 08:36 PM
Joined: Nov 2009
Posts: 4,941
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 4,941
Houston, Texas
I guess you're compressing the water in the pump when the trigger isn't held down. And we all know water doesn't compress well.

Last edited by motor_oil_madman; 10/05/17 08:37 PM.

2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: pressure washer hard to start? [Re: motor_oil_madman] #4534961
10/05/17 09:02 PM
10/05/17 09:02 PM
Joined: Dec 2016
Posts: 6,226
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 6,226
Waco, TX
The pump should be equipped with an unloading valve to stop this from happening.


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: pressure washer hard to start? [Re: Linctex] #4534967
10/05/17 09:07 PM
10/05/17 09:07 PM
Joined: Jul 2005
Posts: 30,416
NY
demarpaint Offline
demarpaint  Offline
Joined: Jul 2005
Posts: 30,416
NY
Originally Posted By: Linctex
The pump should be equipped with an unloading valve to stop this from happening.


Not all of them have one. Mine is an older unit which doesn't have one, which is why I trigger it. It is also not a good idea to run the machine for more than a minute or two w/o triggering the wand.


God Bless Our Troops

Re: pressure washer hard to start? [Re: demarpaint] #4534975
10/05/17 09:12 PM
10/05/17 09:12 PM
Joined: Nov 2009
Posts: 4,941
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 4,941
Houston, Texas
Originally Posted By: demarpaint
Originally Posted By: Linctex
The pump should be equipped with an unloading valve to stop this from happening.


Not all of them have one. Mine is an older unit which doesn't have one, which is why I trigger it. It is also not a good idea to run the machine for more than a minute or two w/o triggering the wand.


If it has a thermal bypass I don't see why it would matter. I stopped mine for no more than a minute or two to adjust the hose and move the pressure washer closer, and noticed it was dumping water out of that relief valve and also dropped the psi from 4200 to 3000psi. (I have a gauge on the wand).


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: pressure washer hard to start? [Re: motor_oil_madman] #4534987
10/05/17 09:24 PM
10/05/17 09:24 PM
Joined: Mar 2008
Posts: 5,839
South Florida
bubbatime Offline
bubbatime  Offline
Joined: Mar 2008
Posts: 5,839
South Florida
You HAVE to depress the handle while pulling it. Otherwise you will put too much pressure on the starting mechanism and likely break the pull cord much sooner than necessary.


17 Chrysler Pacifica Mobil 1 5W30
13 Yamaha XT250 Valv MC 10W40
12 Suzuki S40 Rotella 15W40
10 Acura TSX 2.4 PZL Plat 5W30
06 GMC Sierra Nextgen 10W30


Re: pressure washer hard to start? [Re: bubbatime] #4534988
10/05/17 09:26 PM
10/05/17 09:26 PM
Joined: Sep 2010
Posts: 6,987
Texas
4WD Offline
4WD  Offline
Joined: Sep 2010
Posts: 6,987
Texas
Yep @ tie mine in the saddle with those heavy duty twist ties sold at TSC (Tractor Supply)

Re: pressure washer hard to start? [Re: motor_oil_madman] #4535031
10/05/17 10:31 PM
10/05/17 10:31 PM
Joined: Dec 2016
Posts: 506
E. Tennessee
WhizkidTN Offline
WhizkidTN  Offline
Joined: Dec 2016
Posts: 506
E. Tennessee
My $279 HF special requires you to hold the trigger when pulling the starting cord. A more expensive model would have the unloading valve most likely.


His: '12 Kia Optima SX - 2.0L GDI Twin-Scroll Turbo [Tuned] (74K)
>EDGE 0W-40, Fram XG9688
Her's: '14 Nissan Rogue SL AWD - 2.5L NA (70K)
>EDGE 0W-20, Fram XG6607
Re: pressure washer hard to start? [Re: motor_oil_madman] #4535093
10/06/17 02:36 AM
10/06/17 02:36 AM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline
Joined: Jan 2007
Posts: 17,501
Clovis, CA
I'm glad I clicked on this thread before buying a pressure washer. I had no idea.

I wonder if the owner's manual tells you to hold the trigger.

Re: pressure washer hard to start? [Re: motor_oil_madman] #4535102
10/06/17 03:08 AM
10/06/17 03:08 AM
Joined: Oct 2010
Posts: 930
South Eastern, CT
AMC Offline
AMC  Offline
Joined: Oct 2010
Posts: 930
South Eastern, CT
Interesting observations. Must be something to do with the pump design.

My cheap little champion pressure washer is always super easy to pull over and start. I have never had to pull the trigger while starting it.


18 Honda CR-V - Factory Fill
17 Ram 1500 SLT - Napa Synthetic 5w-20
14 Yamaha Super Tenere - Delvac 15w-40
Re: pressure washer hard to start? [Re: motor_oil_madman] #4535241
10/06/17 08:58 AM
10/06/17 08:58 AM
Joined: Apr 2009
Posts: 2,933
Canada
boraticus Offline
boraticus  Offline
Joined: Apr 2009
Posts: 2,933
Canada
I use a velcro strap to depress the trigger. Be careful to not have the machine on full throttle when starting. Otherwise you'll be getting a little wet chasing the wand.

Re: pressure washer hard to start? [Re: motor_oil_madman] #4535637
10/06/17 06:04 PM
10/06/17 06:04 PM
Joined: Jan 2009
Posts: 2,377
wi
dave123 Offline
dave123  Offline
Joined: Jan 2009
Posts: 2,377
wi
When depressing trigger at start up use soap nozzle or none at all it will pull over like a breeze.

Re: pressure washer hard to start? [Re: motor_oil_madman] #4535932
10/07/17 06:29 AM
10/07/17 06:29 AM
Joined: Jul 2005
Posts: 30,416
NY
demarpaint Offline
demarpaint  Offline
Joined: Jul 2005
Posts: 30,416
NY
Originally Posted By: motor_oil_madman
Originally Posted By: demarpaint
Originally Posted By: Linctex
The pump should be equipped with an unloading valve to stop this from happening.


Not all of them have one. Mine is an older unit which doesn't have one, which is why I trigger it. It is also not a good idea to run the machine for more than a minute or two w/o triggering the wand.


If it has a thermal bypass I don't see why it would matter. I stopped mine for no more than a minute or two to adjust the hose and move the pressure washer closer, and noticed it was dumping water out of that relief valve and also dropped the psi from 4200 to 3000psi. (I have a gauge on the wand).


I have one unit that dumps water through a relief valve, the other doesn't have that set up. I start both with water running and the wand triggered. It helps big time. If I have to run the machine for more than two minutes or so without putting water through it I turn it off. It is a habit that carries over from the machine that doesn't have a relief valve. Either way, trigger the wand when you fire it up.

Make sure when you put it away for the winter, you do your normal engine prep routine. Then shut off the fuel flow and with the hoses off pull the starter cord and pump the water out of the pump. I have a 12" piece of garden hose with the connection attached which I screw into the water inlet and connect a funnel to the end of it. I pour RV anti-freeze into it and pull the starter cord until the anti-freeze squirts out. When that happens I fold the hose onto itself and clamp it so nothing leaks out. The last thing you need is water to freeze in the pump and wreck it. This applies to anyone who lives where freezing temps are a concern. HTH


God Bless Our Troops

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