Loud 40-mins of hissing 7 hours after engine off!?

[nicmalone]

So we finally got to inspect our 2020 Peugout Boxer this morning after 6 months of CoVId enforced separation (it is stored in a secure compound away from our home). It needed a jump start then I ran its engine for 30 mins to charge the battery then I locked it up and left at 1pm.

Got a call from the compound staff at 8pm to say a loud sound like “a gas cylinder being opened up” had been coming from under the driver’s side for 40 minutes but had stopped just as he phoned me. This was 7 hours after I’d turned the engine off. No smell of gas, no signs of fluid leaks underneath the van. I’m going over there tomorrow to see for myself but any ideas of what it could be and any clues I can look for?

 

[wigster]

 

[nicmalone]

Thanks Wigster. Nice to be here

 

[Figaro]

Can`t help with your problem but doing what you did won`t have done your dpf much good

 

[Spriddler]

Tyre puncture?

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[Wikky]

Angry snake under the bonnet?

 

[MGSMerc.]

Hi
Welcome to Fun
Not familiar with the Peugeot but our Volvo car has been known to do a similar thing a number of hours after running and is the heater unit cooling fan purging the air conditioning unit according to the dealers. May help.

 

[donkey]

Does it have air suspension. You may have initiated a recharge and it has a leak.

Geoff

 

[bigtree]

Hi,
And welcome to Fun.

 

[raysalaugh]

Cobra alarm?

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[ambulancekidd]

 

[nicmalone]

The chap on site who phoned us survived without any bites so I’m ruling out snakes

Googling it (surprisingly issue hard to google for) eventually led to the EVAP system test being the lightly answer. It runs a test for fuel leaks but only 5-12 hours after the engine is off to let all the metal components cool and contract which makes leaks more evident. It vents excess fuel vapour, hence the hissing, but charcoal filters out the fuel smell beforehand. As the battery was flat for maybe 2-3 month, I guess it had a lot of venting to do. I’ll check with our dealer but that’s likely it. Opening a door or switching on electrics delays the test, so it’s rare to witness it happening when you are camping (I haven’t in 4 years of frequent weekends away in 3 different vans (though the 1982 Sherpa probably didn’t have this feature ).

Hopefully I‘ve now saved someone else a lot of Googling and concern

Now I just need to get it out for a good motorway run to clear the diesel particulate filter!

 

[f6c]

Welcome aboard

 

[dulvil]

Parked on the cat’s tail?

 

[rolosroller]

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[bigtree]

The chap on site who phoned us survived without any bites so I’m ruling out snakes

Googling it (surprisingly issue hard to google for) eventually led to the EVAP system test being the lightly answer. It runs a test for fuel leaks but only 5-12 hours after the engine is off to let all the metal components cool and contract which makes leaks more evident. It vents excess fuel vapour, hence the hissing, but charcoal filters out the fuel smell beforehand. As the battery was flat for maybe 2-3 month, I guess it had a lot of venting to do. I’ll check with our dealer but that’s likely it. Opening a door or switching on electrics delays the test, so it’s rare to witness it happening when you are camping (I haven’t in 4 years of frequent weekends away in 3 different vans (though the 1982 Sherpa probably didn’t have this feature ).

Hopefully I‘ve now saved someone else a lot of Googling and concern

Now I just need to get it out for a good motorway run to clear the diesel particulate filter!

Go on then and don't keep us in suspenders,show us a picture of your van.

 

[nicmalone]

As you asked so nicely, big tree, this is our latest baby, Foxy.

 

[Mountain man]

Hi welcome from the Highlands of Scotland

 

[Vipar]

Greetings peeps welcome from Bexley

 

[cmcardle75]

So we finally got to inspect our 2020 Peugout Boxer this morning after 6 months of CoVId enforced separation (it is stored in a secure compound away from our home). It needed a jump start then I ran its engine for 30 mins to charge the battery then I locked it up and left at 1pm.

Got a call from the compound staff at 8pm to say a loud sound like “a gas cylinder being opened up” had been coming from under the driver’s side for 40 minutes but had stopped just as he phoned me. This was 7 hours after I’d turned the engine off. No smell of gas, no signs of fluid leaks underneath the van. I’m going over there tomorrow to see for myself but any ideas of what it could be and any clues I can look for?

Can't help with the noise. However, 30 minutes of idling won't significantly charge the battery, but will slightly damage the engine and emission control systems. I suggest that you take a fully charged battery with you and swap it out every time you visit if you have no charging facilities on site. Or just remove the battery entirely and keep it charged at home if you have no alarm/tracker that needs to be running.

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[gus-lopez]

 

[Minxy]

We used to get hissing occasionally on our campers for no apparent reason, the duration varied, never an issue though.

 

[bigtree]

View attachment 480854
As you asked so nicely, big tree, this is our latest baby, Foxy.

That looks cosy. And it's bigtree.

 

[WynandJean]

Hello and welcome from West Midlands.

Wyn

 

[Podney]

I expect it’s the EVAP system test.

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[RubyOptics]

nicmalone I would dearly love it if you subscribed simply so I can know what van you have!! It looks wonderfully compact! We love short little vans and, to paraphrase Di Ian Malcom (Jurassic Park) "We are always on the lookout for the next ex-van!"

 

[Minxy]

nicmalone I would dearly love it if you subscribed simply so I can know what van you have!! It looks wonderfully compact! We love short little vans and, to paraphrase Di Ian Malcom (Jurassic Park) "We are always on the lookout for the next ex-van!"

It looks smaller than it is due to the way the photo has been taken/filtered ... It's an Elddis Sunseeker 115 I believe (a Somerset Motorhomes dealer special of the Autoquest with different decals etc).

 

[RubyOptics]

It looks smaller than it is due to the way the photo has been taken/filtered ... It's an Elddis Sunseeker 115 I believe (a Somerset Motorhomes dealer special of the Autoquest with different decals etc).

Ahh, Thanks Mel! We are drooling over the size and layout of the Sunlight T-58 and this looked around that size from the picture. Thanks for the info!

 

[Rob n manda]

Has it got eberspacher blow air heating ?

 

[davidbaldam]

Hi and welcome to FUN.

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