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Post by tonyroma on Sept 19, 2024 13:46:20 GMT -5
Heading down to troubleshoot the generator on my uncles RV. Was running poorly and he had a guy come to the house on put on a new carb. After replacing the carb generator gets no power, stone dead. Guy looked for blown fuses and bad relays and came up with bubkis. Uncle got his money back and a new carb but has a stone dead generator.
Me and a buddy will try and trace it down. Obviously sounds electrical. Anybody out there familiar with these Cummings generators. Any advice will be appreciated.
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Post by gandy on Sept 19, 2024 14:40:15 GMT -5
Sea Foam
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Post by One Man Gang on Sept 19, 2024 18:14:19 GMT -5
Does it run without generating electricity or does it just not run at all?
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Post by tonyroma on Sept 19, 2024 18:15:41 GMT -5
Does it run without generating electricity or does it just not run at all? Stone dead, won’t turn over. |
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Post by Deleted on Sept 19, 2024 18:28:37 GMT -5
Did you check youtube ?
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Post by tonyroma on Sept 19, 2024 18:41:33 GMT -5
Ya, everything was pretty general and the RV forums lead to dead ends. |
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Post by Deleted on Sept 19, 2024 19:21:09 GMT -5
Is it locked up? Can you turn it over at all?
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Post by billybob on Sept 19, 2024 19:28:10 GMT -5
Sounds like a dead start battery for Generator or start solenoid.
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Post by micciman on Sept 19, 2024 20:32:24 GMT -5
Had to knock a wire loose I would think. Changing a carb won't stop it from turning over.
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Post by tonyroma on Sept 19, 2024 20:45:35 GMT -5
Is it locked up? Can you turn it over at all? Don’t know yet, but it’s was running before the carb change. |
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Post by Deleted on Sept 19, 2024 20:51:44 GMT -5
I’m concerned that it locked up on you. Try to find a way to turn it over two complete revolutions, even if you can do it by hand
If it turns over then the next thing I would check is the starter.
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Post by tonyroma on Sept 19, 2024 20:52:11 GMT -5
Sounds like a dead start battery for Generator or start solenoid. This is where we will start, gonna try and jump it off and see what happens. |
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Post by tonyroma on Sept 19, 2024 20:54:49 GMT -5
Had to knock a wire loose I would think. Changing a carb won't stop it from turning over. This will be the second thing we look for. Knocked off wire, pinched wire, frayed. |
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Post by Deleted on Sept 19, 2024 20:56:23 GMT -5
If you can get it turning over with the starter and it doesn’t fire give it a LITTLE squirt of starting fluid and see if it pops or runs on the fluid. If it doesn’t then you could have a fuel or electric ignition problem.
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Post by Deleted on Sept 19, 2024 20:57:59 GMT -5
Put another spark plug on a plug wire and see if you have spark
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Post by garycoleco on Sept 19, 2024 21:06:07 GMT -5
Occams razor. Sounds like a bad ground. Does it have 12v (preferably more) at the battery? They're really simple to work on. Jump the lugs on the starter also.
1, spark
2. Fuel
3. Air
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Post by tonyroma on Sept 19, 2024 21:22:10 GMT -5
If you can get it turning over with the starter and it doesn’t fire give it a LITTLE squirt of starting fluid and see if it pops or runs on the fluid. If it doesn’t then you could have a fuel or electric ignition problem. If we can get it cranking I’ll be happy. My first instinct since it’s stone dead is electric issue. Had a similar issue with my boat. Intermittent start and then went stone dead. Turned out to be salt build up on the battery leads. Took the Dremmel out and put fresh metal on all the leads and cranked right up. Fingers crossed it’s that simple😉 |
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Post by Deleted on Sept 19, 2024 21:30:29 GMT -5
🤞
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Post by cadman on Sept 20, 2024 7:04:37 GMT -5
Sounds like a dead start battery for Generator or start solenoid. This is where we will start, gonna try and jump it off and see what happens. Try to jump the starter relay and see if the motor turns over. Some models also have a oil sensor that will stop everything if it is low on oil. Kind of odd that it was fine until the guy changed the carb. i would bet he knocked a wire loose, if the unit had not been sitting a long time. |
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Post by jstubby2 on Sept 20, 2024 7:27:10 GMT -5
Pull the plug & try turning it over, you may have had a bad float witch will leak fuel into the cylinder & cause a fluid lock. If fuel comes out of the cylinder & it turns over early drain & change the oil.
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Post by gandy on Sept 20, 2024 10:16:51 GMT -5
This is a lot of thread. To not even know if the battery is connected?
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Post by tonyroma on Sept 20, 2024 11:34:03 GMT -5
This is a lot of thread. To not even know if the battery is connected? That will be first on the list. Check if batteries are charged and connected. |
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Post by gandy on Sept 20, 2024 12:26:44 GMT -5
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Post by jstubby2 on Sept 20, 2024 13:08:58 GMT -5
K.I.S.S. Always! Keep It Simple Stupid 😌
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Post by tonyroma on Sept 21, 2024 16:45:37 GMT -5
So the mobile RV “mechanic” who changed out the carb didn’t disconnect the batteries. He must have arced something and blew the in-line 150 amp fuse.
After replacing the fuse we got it turning over. It was stumbling and running like shit. $5.31 spark plug got that bitch purring like a lonely kitten.
The carb was never the problem. All it needed was a fucking spark plug!!! Got a free lunch, beer, and an excuse to hang with one of my favorite people in the world.
K.I.S.S…. Yup
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Post by Deleted on Sept 21, 2024 17:41:11 GMT -5
Sure glad it worked out for you 👍
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Post by ferris1248 on Sept 22, 2024 7:45:45 GMT -5
Good deal.
Sometimes we can over think an issue.
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Post by gogittum on Sept 22, 2024 10:57:52 GMT -5
Sure glad it worked out for you 👍 Good on you. It usually works out the other way 'round. |
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Post by swampdog on Sept 22, 2024 14:56:12 GMT -5
Good information! Glad you got it purring.
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Post by richm on Sept 23, 2024 19:53:38 GMT -5
So the mobile RV “mechanic” who changed out the carb didn’t disconnect the batteries. He must have arced something and blew the in-line 150 amp fuse. After replacing the fuse we got it turning over. It was stumbling and running like shit. $5.31 spark plug got that bitch purring like a lonely kitten. The carb was never the problem. All it needed was a fucking spark plug!!! Got a free lunch, beer, and an excuse to hang with one of my favorite people in the world. K.I.S.S…. Yup Excellent!!! That was the problem w my 2005 atv - fricking spark plug! Well done! |
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