My fifth wheel is parked right now. When I close the tank valves there is no smell, but when I open them there is a slight propane smell. It is present all the time and not overwhelming. I read about pressure relief valves... any thoughts on the topic? Do most people with 5th wheels experience a constant "slight-smell"?

You should spray all connections/fittings with soapy solution and look for signs of leaking (bubbles) WITH the cylinder valves OPENSpray the valveSpray the Large Green ACME NutSpray the area behind the Nut where hose connectsSpray the LP regulator....crimped body, hose fittings, vent holes (small pin hole pin 1st stage and 1/2" screened vent on 2nd stage)We would get a slight whiff after having cylinders filled....propane residue from bleeder valve.Otherwise......NO

Make sure you get some soapy water on the breather port at the bottom of the regulator. I'll bet the diaphragm is failing. No it is not normal, you should never smell Propane unless you disconnect a line..

Be sure to turn the tank valves completely open till they are tight to prevent leaking around the valve shaft.

This was one of my draw backs for fifth wheel trailers... My two propane tanks are directly under my front bed overhang haha...I would most definitely inspect for where the leak smell is coming from... Doesn't sound normal to me...The little things sneak up on you in the middle of the night haha... Then they are not little anymore...I have the same problem on my POPUP layout... I have two big tanks under the front tent bed setup...Roy Ken

Slight smell where the LP Gas cylinders are located normal?

Lynnmor
Explorer
Aug 27, 2019
Be sure to turn the tank valves completely open till they are tight to prevent leaking around the valve shaft.
opnspaces
Navigator II
Aug 27, 2019
Make sure you get some soapy water on the breather port at the bottom of the regulator. I'll bet the diaphragm is failing. No it is not normal, you should never smell Propane unless you disconnect a line..
Old-Biscuit
Explorer III
Aug 27, 2019
You should spray all connections/fittings with soapy solution and look for signs of leaking (bubbles) WITH the cylinder valves OPEN

Spray the valve
Spray the Large Green ACME Nut
Spray the area behind the Nut where hose connects
Spray the LP regulator....crimped body, hose fittings, vent holes (small pin hole pin 1st stage and 1/2" screened vent on 2nd stage)

We would get a slight whiff after having cylinders filled....propane residue from bleeder valve.
Otherwise......NO

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Slight smell where the LP Gas cylinders are located normal?

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