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Old 08-16-2006, 02:45 PM   #1
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1995 35' Land Yacht Diesel
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Onan Generator

Recently returned from short trip to Michigan, where we did not use the generator very often. Upon return to the Muggly Midwest, I was not able to immediately hook up to my shore power so started the generator to run the rooftop A/C unit to keep coach cool. Generator sounded like it was running rough at first then settled down and was smooth running, but noticed a very pronounced rotten egg smell. This was not coming from any noticeable source, but it did fill the whole coach. It did not appear to be fronm the A/C unit, refrigerator or any plumbing drains (tanks emptied on way home). I have not tried to repeat the effect just yet, but wanted to know if anyone has had a similar experience and would like to share. Suggestions welcome!
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Old 08-16-2006, 05:39 PM   #2
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onan generator

you might check your battery. rotten egg smell sounds like the batteries may be overcharging. check voltage at battery.
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Old 08-16-2006, 07:53 PM   #3
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My gen set is propane operated is yours? The smell could be a propane leak.
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Old 08-16-2006, 09:54 PM   #4
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1995 35' Land Yacht Diesel
Noblesville , Indiana
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Onan Generator

Mine is also propane, but this does not smell like gas and it stops when generator shut off. Batteries are sealed AGM type batteries. Smell does not come from front bonnet, I checked. I suppose it could be the starting battery as I did not check it. That will be next item to check. Thanks for suggestion.
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Old 08-18-2006, 09:16 PM   #5
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I always thought that the "Rotten Egg Smell" was unburned propane.
Sometimes I get that to when starting the Onan. I figured it flooded or got more propane than it could effectively burn and that resulted inthe smell.
I think I'll ask the propane place, I don't want to fool with anything that explosive.
Paul
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Old 08-18-2006, 11:20 PM   #6
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Check your propane level

When the propane tank runs low, there is a pronounced smell of rotten eggs. You might want to have a certified gas tech look this over - keep in mind that, if your LY is set up like mine, the generator runs on liquid propane, while the hot water tank, refer and stove use propane vapour. You should see two valves coming out of the propane tank (located just in front of the entry door on the curb side). There is also a gauge on the tank there, in addition to the test switch on the panel above the stove.
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Old 08-23-2006, 02:49 PM   #7
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1995 35' Land Yacht Diesel
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Propane level

Yep, mine is set up the same. Level is down to about 1/4 so that may be the answer. I am going through a troubleshooting exercise with the inside monitor panel as it always reads full, no matter what the tank guage reads. FYI inside panel was made by Ventline, and they are very helpfull. I will be getting the tank filled next week and will see if the smell persists. Thanks for your input.
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Old 07-22-2009, 09:46 PM   #8
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i think hes right on the batt.

check the batt. that sounds right to me
Quote:
Originally Posted by arodriguez60 View Post
you might check your battery. rotten egg smell sounds like the batteries may be overcharging. check voltage at battery.
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