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  1. #1

    Default How to clear an air lock in a gas system in a motorhome

    I'm suspecting an air lock in the gas system as we have a full gas bottle, the bottle is switched on, but no gas at the stove.

    Will someone please tell me what to do to clear an airlock. TIA.
    It is better to wear out than to rust out.
    - Richard Chamberlain, Tour of the Hebrides

    Us husbands are a sorry lot.

  2. #2
    Soaring like a chicken prefect's Avatar
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    Default Re: How to clear an air lock in a gas system in a motorhome

    The first thing to check is the bottle safety valve if you happened to open the the valve if there is something open down stream the valve will close.
    So check all gas appliances are off and take off regulator and refit.
    I dont think you can get an airlock in the gas system as regulated LPG gas about 10 psi will push any air out of the way.
    There is always a possibility you dont have a problem I will explain, if you dont use the gas for a while god knows where it goes but it takes a while to go through. On my bus if the it hasnt been used for a while it will never get to the fridge unless I turn on the the stove first. Like I said I dont know where the gas goes but it goes.
    You may need to follow the lines from the bottle to the stove and look for discontinuity or kinks. Then a puff of regulated air may be required to blow the lines through obviously if you go hard out with compressed air at 100 psi you will blow the copper tubing or the flexible hoses. I judicious puff would be ok.
    Try taking the connection off at the stove and see if can hear and smell gas there there could be a block in the stove gas manifold. Put your fag out first though!
    If that does not work try another regulator and bottle from your bbq.
    I am assuming your bottle has some gas in it?
    Last edited by prefect; 02-11-2020 at 05:55 PM.
    Its amazing how Potatoes give us chips,fries and Vodka.

    Get your s*** together every other vegetable.

  3. #3

    Default Re: How to clear an air lock in a gas system in a motorhome

    Thanks for that, Prefect. I'll give that a go today and let you know. And yes, the bottle is full.
    It is better to wear out than to rust out.
    - Richard Chamberlain, Tour of the Hebrides

    Us husbands are a sorry lot.

  4. #4

    Default Re: How to clear an air lock in a gas system in a motorhome

    I made certain the gas stove and the fridge were turned off and then disconnected from the gas bottle and reconnected again. It took a little while and I thought for a minute that that was not the problem. I tried lighting the stove two or three times before the gas finally came through and now it is working so it seems as though that was the problem.

    Thanks very much, Prefect. Much appreciated.
    It is better to wear out than to rust out.
    - Richard Chamberlain, Tour of the Hebrides

    Us husbands are a sorry lot.

  5. #5
    Soaring like a chicken prefect's Avatar
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    Default Re: How to clear an air lock in a gas system in a motorhome

    Another thing never fill LPG bottles unless they are empty as there is some thane thing happening and you get more of one thane than you should compared with the other thane. It stays in the bottom of the bottle. It can be so bad with partially filled bottles you will struggle to get a burner lit especially on a cold day.
    Its amazing how Potatoes give us chips,fries and Vodka.

    Get your s*** together every other vegetable.

  6. #6

    Default Re: How to clear an air lock in a gas system in a motorhome

    Thanks for that, Prefect. Yes, we always run the bottle until it's empty then switch over to the second bottle.
    It is better to wear out than to rust out.
    - Richard Chamberlain, Tour of the Hebrides

    Us husbands are a sorry lot.

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