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Old 09-24-2020, 04:51 PM   #1
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Brand: Thor Motor Coach
State: Florida
Posts: 80
THOR #17954
Fuel Solenoid on carburetor not getting voltage

On an Cummins Onan 4000KW, after troubleshooting why it wouldn’t run unless I sprayed the carburetor. Then would die. Fuel pump fine, carburetor new, control board new.... ok now. I check carburetor solenoid no voltage . Thus no fuel. Can’t find broken wire and no voltage on solenoid leads?????
Can I put 12 bolts to solenoid to test or where do I look?????
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Old 09-24-2020, 05:46 PM   #2
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Brand: Thor Motor Coach
Model: Axis 24.1
State: Connecticut
Posts: 137
THOR #20289
Yes I don't see any problem if you disconnect the current leads and apply 12V to the solenoid terminals to see if it works. This of course will determine if it is the power leads or the solenoid itself being the problem.

If it works, then measure the voltage at the leads with them disconnected when turned on. That will confirm that it is the power leads that are the problem.

David
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Old 09-24-2020, 06:56 PM   #3
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Brand: Thor Motor Coach
Model: 29h outlaw
State: New Jersey
Posts: 342
THOR #5248
Not sure about your model, but many have a low oil pressure switch that will open that lead and cut off the fuel supply
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Old 09-25-2020, 03:08 PM   #4
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Brand: Thor Motor Coach
Model: 2014 Hurricane 34E
State: Alabama
Posts: 228
THOR #6181
Also, how much gas to you have in the RV? Most have a safety to not run you out of gas w the generator. I think book said 1/4 tank. Thx Dennis.
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Old 09-30-2020, 12:54 AM   #5
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Brand: Thor Motor Coach
State: Florida
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THOR #17954
Quote:
Originally Posted by Trkyte@msn.com View Post
Not sure about your model, but many have a low oil pressure switch that will open that lead and cut off the fuel supply


Thanks I was hoping that the oil switch was bad. Unfortunate I found out that the 4000 micro guilt is a pancake engine. Like a lawn mower. Oil is splashed no pump no sensor.

Thanks
Luke
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Old 09-30-2020, 12:56 AM   #6
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Brand: Thor Motor Coach
State: Florida
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THOR #17954
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Originally Posted by Budman View Post
Also, how much gas to you have in the RV? Most have a safety to not run you out of gas w the generator. I think book said 1/4 tank. Thx Dennis.


Tank full, I thought of that too. Thanks still searching
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Old 09-30-2020, 03:04 AM   #7
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Brand: Thor Motor Coach
State: England
Posts: 273
THOR #16471
Also you may have an oil level switch, at normal oil levels it should be open circuited.
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