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Generator carb solenoid question #4597123
12/07/17 02:02 PM
12/07/17 02:02 PM
Joined: Dec 2017
Posts: 5
Washington
Arsigi Offline OP
Arsigi  Offline OP
Joined: Dec 2017
Posts: 5
Washington
Greetings,

I have a Champion 41430 generator with a minor issue. The carburetor took some external damage, so I replaced it. After installing the new carb, it will start for a short period (~10 seconds or so) and then die. I did some diagnostics and found that the voltage going to the carb fuel solenoid is very low (~1-2v) and only lasts for a second or two, causing me to suspect that it is just enough current to let a tiny bit of fuel in, then closes again.

My main concern is, am I correct in assuming that the solenoid should be receiving a full 12v, and that that should be constant when running? I can easily wire in my own switch to make that happen, I just wasn't sure if there might be some sort of variable voltage and variable fuel amount that I wouldn't be taking into consideration. It seems like it would almost certainly be only "on/off" but I thought it best to get a second opinion or two on that.

I did find info elsewhere that gives me pause. Specifically, a similar Honda carb (supposedly these Champion units are Honda clones?) where the solenoid/valve is normally open when no current is applied, and only gets closed for a short time after shut-down to prevent backfire. So I may be misunderstanding how mine works, and barking up the wrong tree.

Thanks for any input!

Re: Generator carb solenoid question [Re: Arsigi] #4597127
12/07/17 02:04 PM
12/07/17 02:04 PM
Joined: Dec 2017
Posts: 5
Washington
Arsigi Offline OP
Arsigi  Offline OP
Joined: Dec 2017
Posts: 5
Washington

Re: Generator carb solenoid question [Re: Arsigi] #4597245
12/07/17 04:18 PM
12/07/17 04:18 PM
Joined: Jan 2005
Posts: 5,664
Charlotte, NC
Oldmoparguy1 Offline
Oldmoparguy1  Offline
Joined: Jan 2005
Posts: 5,664
Charlotte, NC
If this is a B & S engine, then yes, there should be +12V on it when the key is on. It has a plunger that closes the main jet on the carb when you turn off the key. The solenoid is there mainly to prevent a shutdown backfire.

Good luck,

Wayne


A Randomly Selected Thought For The Day:
If Noah had used Zip, he could have used a smaller boat.
Re: Generator carb solenoid question [Re: Arsigi] #4597252
12/07/17 04:29 PM
12/07/17 04:29 PM
Joined: Dec 2016
Posts: 6,226
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 6,226
Waco, TX
I usually just cut the tip off of the needle and leave the wires disconnected. I hate spending time troubleshooting stuff when the fix is that easy, but that's just me.


"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: Generator carb solenoid question [Re: Arsigi] #4597270
12/07/17 04:49 PM
12/07/17 04:49 PM
Joined: Dec 2017
Posts: 5
Washington
Arsigi Offline OP
Arsigi  Offline OP
Joined: Dec 2017
Posts: 5
Washington
Thanks! After doing yet more searching, I am fairly confident it is a B&S engine - I found what looks like a mechanically identical one made under the B&S brand name. Will play with it this weekend, if it is warm enough(!).

Re: Generator carb solenoid question [Re: Arsigi] #4597372
12/07/17 07:03 PM
12/07/17 07:03 PM
Joined: May 2015
Posts: 173
Virginia
GravelRoad Offline
GravelRoad  Offline
Joined: May 2015
Posts: 173
Virginia
From the owners manual I'm 99% sure it's a chonda engine, Chinese Honda copy/counterfeit.

Anti-fire solenoid needs 12v when starting/running.

Or do what Linctex posted.


2016 Subaru Outback Premium 2.5. PP 5w30 oem filter
2018 Hyundai Kona 1.6T. Lifetime dealer free oil/filter change
Re: Generator carb solenoid question [Re: Arsigi] #4597382
12/07/17 07:13 PM
12/07/17 07:13 PM
Joined: Nov 2009
Posts: 4,941
Houston, Texas
motor_oil_madman Offline
motor_oil_madman  Offline
Joined: Nov 2009
Posts: 4,941
Houston, Texas
So let me guess this solenoid fails and makes it so the engine starves for fuel?


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

Re: Generator carb solenoid question [Re: Arsigi] #4597397
12/07/17 07:31 PM
12/07/17 07:31 PM
Joined: Apr 2009
Posts: 2,933
Canada
boraticus Offline
boraticus  Offline
Joined: Apr 2009
Posts: 2,933
Canada
A B&S engine on a Chinese built Champion generator? Really?

I had a 2011 Champion 4000/3000 watt generator and it had a 196cc Honda clone engine.

One wouldn't think B&S would be supplying engines to Champion?

Re: Generator carb solenoid question [Re: motor_oil_madman] #4597433
12/07/17 08:08 PM
12/07/17 08:08 PM
Joined: May 2015
Posts: 173
Virginia
GravelRoad Offline
GravelRoad  Offline
Joined: May 2015
Posts: 173
Virginia
Originally Posted By: motor_oil_madman
So let me guess this solenoid fails and makes it so the engine starves for fuel?


Yes. You are correct.

Solenoid needle pulls down away from main jet with voltage. (Assuming the carb is not gummed-up)

No voltage the spring in the solenoid moves up and shuts off main jet starving it of fuel.

Hope this helps.


2016 Subaru Outback Premium 2.5. PP 5w30 oem filter
2018 Hyundai Kona 1.6T. Lifetime dealer free oil/filter change
Re: Generator carb solenoid question [Re: Arsigi] #4597534
12/07/17 10:02 PM
12/07/17 10:02 PM
Joined: Nov 2009
Posts: 4,941
Houston, Texas
motor_oil_madman Offline
motor_oil_madman  Offline
Joined: Nov 2009
Posts: 4,941
Houston, Texas
The float still stays keeps the needle and seat seated correct?

Last edited by motor_oil_madman; 12/07/17 10:03 PM.

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

Re: Generator carb solenoid question [Re: motor_oil_madman] #4597618
12/07/17 11:14 PM
12/07/17 11:14 PM
Joined: May 2015
Posts: 173
Virginia
GravelRoad Offline
GravelRoad  Offline
Joined: May 2015
Posts: 173
Virginia
Originally Posted By: motor_oil_madman
The float still stays keeps the needle and seat seated correct?


Yes.


2016 Subaru Outback Premium 2.5. PP 5w30 oem filter
2018 Hyundai Kona 1.6T. Lifetime dealer free oil/filter change
Re: Generator carb solenoid question [Re: boraticus] #4597966
12/08/17 12:01 PM
12/08/17 12:01 PM
Joined: Dec 2017
Posts: 5
Washington
Arsigi Offline OP
Arsigi  Offline OP
Joined: Dec 2017
Posts: 5
Washington
Originally Posted By: boraticus
A B&S engine on a Chinese built Champion generator? Really?

I had a 2011 Champion 4000/3000 watt generator and it had a 196cc Honda clone engine.

One wouldn't think B&S would be supplying engines to Champion?


I honestly don't know one way or the other for sure - I had read on another forum that they were Honda clones, but then I also found this:

https://www.homedepot.com/p/Briggs-Strat...30549/203180791

Which is the same displacement, same power features, and visually the motor appears to be the same as the one I have - only difference I see is a slightly different air filter.

Re: Generator carb solenoid question [Re: Arsigi] #4598326
12/08/17 06:18 PM
12/08/17 06:18 PM
Joined: Jan 2009
Posts: 1,306
Watertown, New York
cronk Offline
cronk  Offline
Joined: Jan 2009
Posts: 1,306
Watertown, New York
Champion uses their own China made Honda clones.
Not sure why you wouldn't be getting power. I take it this one is electric start with a small battery.
Make sure the battery is charged up and any electric connections between the battery, switch and solenoid are clean and tight.
Check no wires have chaffed an rubbed through the insulation.
If all else fails, I have done what Linctex suggested on a couple small engines with no problem, only down side is you may get a small backfire after shut down.

Those Champions are a good generator, my 3500/4000w unit is around 8 years old and working great!
IMO one of the best budget generators out there!


2008 Ford F350
2003 Chevy Cavalier
2011 Nissan Quest
1986 Pontiac Trans Am
1940 Ford 9N Tractor
Amsoil lubes and filters!
Re: Generator carb solenoid question [Re: cronk] #4598875
12/09/17 11:13 AM
12/09/17 11:13 AM
Joined: Oct 2016
Posts: 128
WV
jonnied1 Offline
jonnied1  Offline
Joined: Oct 2016
Posts: 128
WV
Originally Posted By: cronk
Champion uses their own China made Honda clones.
Not sure why you wouldn't be getting power. I take it this one is electric start with a small battery.
Make sure the battery is charged up and any electric connections between the battery, switch and solenoid are clean and tight.
Check no wires have chaffed an rubbed through the insulation.
If all else fails, I have done what Linctex suggested on a couple small engines with no problem, only down side is you may get a small backfire after shut down.

Those Champions are a good generator, my 3500/4000w unit is around 8 years old and working great!
IMO one of the best budget generators out there!


approved

Re: Generator carb solenoid question [Re: Arsigi] #4598919
12/09/17 12:19 PM
12/09/17 12:19 PM
Joined: Aug 2003
Posts: 10,774
Buffalo, NY
JTK Offline
JTK  Offline
Joined: Aug 2003
Posts: 10,774
Buffalo, NY
Yep, like Cronk said, are you showing 12+ VDC at the battery with the unit not running? If you're not, the solenoid will never pull off and open up fuel to the engine.

I've never seen a portable generator with a shut-off solenoid on the carb, but I've only worked on a few with batteries on them and E-start equipped.


2017 Ram 1500 4x4, 3.6L. 2016 Nissan Quest SV (Babe magnet IV)
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