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governor got stuck on pressure washer #4505897
09/02/17 11:23 PM
09/02/17 11:23 PM
Joined: Nov 2009
Posts: 4,943
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 4,943
Houston, Texas
This must be a generac thing. The governor freezes up if not used enough. Had the same thing happen on a generator I was fixing and i'm pretty sure it bent a pushrod almost instanty, or the governor assembly let go inside the engine. Anyways I was doing some pressure washing for a customer and he was home waiting for me to show up, so I didn't want to show up and then tell him I would have to come back since my pressure washer wasn't working right, so I just used it as is. Anyways, after an hour it finally freed up and starting "governing" the rpms. It only reved high when I let off the trigger which was rarely and stayed pretty close to the correct rpm with the trigger pulled so I doubt I hurt anything.

Anyways, my point is I've never had this happen on any other engine. What gives? It started up first try.


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

Re: governor got stuck on pressure washer [Re: motor_oil_madman] #4506115
09/03/17 09:55 AM
09/03/17 09:55 AM
Joined: Aug 2017
Posts: 36
West Michigan
Spike555 Offline
Spike555  Offline
Joined: Aug 2017
Posts: 36
West Michigan
You have a Honda engine don't you?
This is very common on Honda engines as the governor is on the inside of the engine instead of the outside and it will become sticky.
Using the proper oil and changing it at the correct interval is key to preventing this.
You did not hurt anything by running it that way and in fact you may have done it good, it got nice and hot and was freed up.
Change the oil using a high quality HD-30 like Honda or Castrol.

Re: governor got stuck on pressure washer [Re: motor_oil_madman] #4506143
09/03/17 10:31 AM
09/03/17 10:31 AM
Joined: Nov 2009
Posts: 4,943
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 4,943
Houston, Texas
It's a generac pressure washer I did it to.


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

Re: governor got stuck on pressure washer [Re: motor_oil_madman] #4506144
09/03/17 10:32 AM
09/03/17 10:32 AM
Joined: Nov 2009
Posts: 4,943
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 4,943
Houston, Texas
It's a generac pressure washer I did it to.


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

Re: governor got stuck on pressure washer [Re: Spike555] #4506164
09/03/17 11:04 AM
09/03/17 11:04 AM
Joined: Nov 2009
Posts: 4,943
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 4,943
Houston, Texas
Originally Posted By: Spike555
You have a Honda engine don't you?
This is very common on Honda engines as the governor is on the inside of the engine instead of the outside and it will become sticky.
Using the proper oil and changing it at the correct interval is key to preventing this.
You did not hurt anything by running it that way and in fact you may have done it good, it got nice and hot and was freed up.
Change the oil using a high quality HD-30 like Honda or Castrol.






Which honda? The gx series or the gc series?


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

Re: governor got stuck on pressure washer [Re: motor_oil_madman] #4506234
09/03/17 12:05 PM
09/03/17 12:05 PM
Joined: May 2015
Posts: 173
Virginia
GravelRoad Offline
GravelRoad  Offline
Joined: May 2015
Posts: 173
Virginia
This issue is usually caused by a sticking throttle plate shaft. When the engine if off, the governor holds the throttle wide open. After sitting for months or years, the fuel/vapors make their way up the emulsion tube and settle down in the lower throttle shaft pocket/hole, forms a lacquer. Now you have WOT when started.

If this happens, shut off engine, see if you can move throttle at carb by hand/finger. if not, remove air filter and spray a small amount of carb cleaner or wd-40 in carb and onto throttle shaft. Also spray some on throttle shaft on the outside of carb where it enters. Move throttle shaft back and forth until totally freed up.

Restart engine and confirm proper operation.

A stuck governor or related component is rare. A broken governor is more common than a stuck governor.


2016 Subaru Outback Premium 2.5. PP 5w30 oem filter
2018 Hyundai Kona 1.6T. Lifetime dealer free oil/filter change
Re: governor got stuck on pressure washer [Re: motor_oil_madman] #4506338
09/03/17 02:34 PM
09/03/17 02:34 PM
Joined: Aug 2017
Posts: 36
West Michigan
Spike555 Offline
Spike555  Offline
Joined: Aug 2017
Posts: 36
West Michigan
From what I was told by a small engine shop all of them with OHV's.
Everything is internal so this is common.

I had a Honda engine on my Snapper walk behind mower, after 20yrs the governor did this, I had no power, it would not open the throttle when under load, took it in, they said what was wrong and I scrapped the mower because to fix it it was not worth it.

Re: governor got stuck on pressure washer [Re: motor_oil_madman] #4506811
09/03/17 10:19 PM
09/03/17 10:19 PM
Joined: Nov 2009
Posts: 4,943
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 4,943
Houston, Texas
Last time I checked on a small engine it was a mechanism inside the crankcase that spins around and has weights on it and opens more according to rpm. This somehow opens the throttle plate controlling the rpm. So I varnish collects on that shaft like the other poster said, then it would make it not work right.

I only have a general idea though. Lol


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

Re: governor got stuck on pressure washer [Re: motor_oil_madman] #4506814
09/03/17 10:21 PM
09/03/17 10:21 PM
Joined: Nov 2009
Posts: 4,943
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 4,943
Houston, Texas
I would just think the whole carb would be gunned up and not even let the engine run to begin with.


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

Re: governor got stuck on pressure washer [Re: motor_oil_madman] #4507018
09/04/17 08:43 AM
09/04/17 08:43 AM
Joined: Sep 2015
Posts: 1,528
USA
mk378 Offline
mk378  Offline
Joined: Sep 2015
Posts: 1,528
USA
Read what GravelRoad said.

A spring (on the outside of the engine near the carb) pulls the throttle wide open when the engine is stopped or turning slowly. As rpm increases, the spinning governor weights inside the crankcase apply force to a shaft and lever that comes outside. The lever has a push-rod to the throttle. The force from the governor works against the spring to pull the throttle closed.

The most common breakdown of this system is the spring breaks or becomes detached. This causes the throttle to move to the closed position and stay there, so the engine runs slowly with no power. The second most common problem is something getting stuck, usually the shaft on the carb. The weights inside the engine are very seldom a problem. What can happen in that area is the outside lever being clamped in the wrong position on the shaft that comes through the crankcase wall. This is usually a result of someone attempting to repair it.

Re: governor got stuck on pressure washer [Re: motor_oil_madman] #4507036
09/04/17 09:13 AM
09/04/17 09:13 AM
Joined: Aug 2017
Posts: 36
West Michigan
Spike555 Offline
Spike555  Offline
Joined: Aug 2017
Posts: 36
West Michigan


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