Rotten egg/ sulphur
Hi
i am getting a rotten egg or sulphur smell in my Motorhome when starting off but goes when I have stopped could it be the battery in the cab or somethings to do with the LPG conversion .
google seems to suggest it co be both or could it be the gray waste holding tank
regards
david
Comments
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Battery did go flat and is know on a trickle charge as alarm seems to drain cab battery when not in use - is it time for a new battery
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Overcharged battery most likely source, but propane/LPG can also have a bit of a rotten egg smell. I would go with battery as most likely.
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battery possibly....broken catalytic converter?
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Possibly the leisure battery - do you have a CO alarm?
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New battery?
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Good guess.
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Choice of either Battery or Cat.....
Does the LPG conversion affect the exhaust emissions...
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I would have thought if it was your battery you would smell it before you even moved off especially if it was on charge before setting out, same should apply to your waste tank. If your engine is run on LPG it could be a smell of residual gas. You could
remove your battery and go for a test drive to eliminate that cause.peedee
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When a battery discharges with use, sulphides build up on the plates as a by product of the energy production system. When a battery is heavily discharged the plates have a large build up of suphides/ sulphates. When a standard / Newer battery charger is
connected it first pulses the battery to drop off the heavy build up of the sulphate residue, Then hits the battery with a proper charge when the chrager has detected the correct level of residual energy remaining in the battery. HOWEVER, if the battery is
being recharged from a truck alternator, Its being hit with a huge charging load immediatly which drives off the sulphates rapidly and produces the Hydrogen sulphide gasses. Overcharging a battery over and over again exacerbates the problem. Dont forget Hydrogen
suphide gas is heavier than air and can linger / concentrate in a battery compartment or along the floor of a caravn / Motorhome it is poisonous. As with Boff Check the charger before purchasing a new Battery, Disconnect the battery when laying over the vehicle
this will stop the battery drain.0 -
You also need to check the output voltage of the charger. Otherwise if this faulty you will destroy your next battery.
Or set your motorhome on fire!! Friends noticed a similar smell - and whilst the motorhome was not occupied (fortunately) it set on fire. The battery was under the driver's seat area and the motorhome was almost written off due to fire damage, but as it
had been specially customised they persuaded the insurers to accept responsibility and it was refitted, re-upholstered, and returned to them almost a year after the fire.0 -
Similar story (but fortunately not a fire) here:
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If you examine the battery, if overheating/dangerous condition it may well be expanding and ballooning, If so get it out sharpish! You can certainly have it checked. I do recall their were issues in some van makes with the charge control system under the
drivers seat.More likely to be a blocked cat - usually when hot/under strain. You may find that the vehicle is more gutless than usual, though I appreciate this is harder to determine in a motorhome.
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I don't think it's anything to do with your battery's sounds more like the dirty water tank get agitataed when you are moving plus air circulating when moving, try empty the tank fit all the sink plugs and try again. if it stops you have your answer.
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Does sound a lot like Battery problems if overcharged can stink like rotten eggs could be alternator regulator failed so isn’t cutting back when battery charged. This would overcharge and the water in battery will evaporate (check level) slowly destroying
your battery.A tired Battery can also smell under load as your problem is right after starting might be your starter battery
Could also be waste tank water sloshing about, our Motor home used to smell when parked up in storage. After advice here we leave drain tap open and all plugs in place when stored and smell went away.
If your Battery fails have the charging system checked over as if the regulator isn’t regulating your new battery will go same way.
You can do it with a multy meter there are plenty of web site will tell you what voltage to expect but if in doubt let someone that knows what they are doing look at it or you might need to buy another battery sooner than you hoped.
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I think it's the battery. We had a similar smell whilst away for a weekend with our caravan earlier this year. I thought it was coming from the kitchen sink or even the drains from the site toilet block! Only when filling up our Aquaroll did I here a bubbling
sound coming from the battery compartment! The battery was boiling, fortunately we found it in time and no damage was done... Just needed a new battery.0
