leak between venturi and bottom of grill, repaired with gasket maker has now melted

Discussion in 'General Discussion' started by qwertyjjj, Apr 20, 2016.

  1. qwertyjjj

    qwertyjjj Newbie

    I had a small gas leak and flames were coming out of the bottom of the grill - this is where the venturi joins the metal grill and I guess over the years the original gasket material has disappeared.

    So, the only thing I could find locally was automotive high temp gasket maker (up to 600F) and I used that to seal up the venturi.

    On first use, it melted and flames were coming out the bottom again.

    ANy ideas what I can do? Is there some sort of gasket material I can buy and cut a hole in?

    The BBQ is a fairly old ``Wait Broilmaster``

    http://www.canadiantire.ca/en/pdp/permatex-hi-temp-red-rtv-gasket-maker-0383784p.html#.Vxgap7UrLIV

     
    Last edited: Apr 21, 2016
  2. qwertyjjj

    qwertyjjj Newbie

    anyone?
     
  3. daveomak

    daveomak Smoking Guru OTBS Member SMF Premier Member

    Exhaust gasket material from an automotive store....
     
  4. qwertyjjj

    qwertyjjj Newbie

    That's what was used... link above
     
  5. daveomak

    daveomak Smoking Guru OTBS Member SMF Premier Member

    So, the only thing I could find locally was automotive high temp gasket maker (up to 600F) and I used that to seal up the venturi.

    That is not exhaust gasket....   Exhaust temps can run upward of 1100-1300 degrees...   

    BUT, upon further pondering, I believe your burner flame holes are plugged...  maybe with rust...  maybe spider webs...    take it apart and clean it....
     
  6. timleo

    timleo Smoke Blower

    Can you post a larger photo?  I can't really tell what's going on in that tiny picture
     
  7. qwertyjjj

    qwertyjjj Newbie

    Reattached - think you can click this one to open larger:

     
  8. daveomak

    daveomak Smoking Guru OTBS Member SMF Premier Member

    Did you check the burner for foreign material ????
     
  9. qwertyjjj

    qwertyjjj Newbie

    It's on of those H shaped burners - doesn't seem to be any way to pry it open...

    Everything burns with big yellow flames though.
     
    Last edited: Apr 23, 2016
  10. daveomak

    daveomak Smoking Guru OTBS Member SMF Premier Member

    It is partially plugged....  blow it out with compressed air or water pressure and dry...  Remove the flex gas tubing and remove the burner to clean it....  Check the flex tube also...
     
  11. qwertyjjj

    qwertyjjj Newbie

    do I need to reseal with high heat silicone after? ie the join between venturi tube and base of BBQ?
     
  12. daveomak

    daveomak Smoking Guru OTBS Member SMF Premier Member

    That RTV melted the first time you used it....  why do you think it will work this time ???    It won't...
     
  13. qwertyjjj

    qwertyjjj Newbie

    That`s why I said high heat like the automotive you mentioned.

    Or will unblocking the burner mean I don;t need a gasket?
     
  14. daveomak

    daveomak Smoking Guru OTBS Member SMF Premier Member

    From what I can tell, the burner is directly above those connecting points...   That area might get really hot from radiant heat from the burner...    What kind of gasket was in there that you removed ???
     
  15. qwertyjjj

    qwertyjjj Newbie

    There was nothing there or maybe it had disintegrated overs the years. It's a used BBQ that the old neighbours left so whether they installed the gasket originally or not I am not sure but I presume it's a standard material used for any BBQ that has a venturi joining the burner? Although it doesn't seem to be sold as spare parts.
     

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