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

post #1 of 16
Thread Starter 

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

 


Edited by qwertyjjj - 4/21/16 at 4:14am
post #2 of 16
Thread Starter 

anyone?

post #3 of 16

Exhaust gasket material from an automotive store....

post #4 of 16
Thread Starter 
That's what was used... link above
post #5 of 16

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....

post #6 of 16

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

post #7 of 16
Thread Starter 
Quote:
Originally Posted by DaveOmak View Post
 

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....

 

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

post #8 of 16

Did you check the burner for foreign material ????

post #9 of 16
Thread Starter 
Quote:
Originally Posted by DaveOmak View Post
 

Did you check the burner for foreign material ????

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.

post #10 of 16

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...

post #11 of 16
Thread Starter 
Quote:
Originally Posted by DaveOmak View Post
 

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...

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

post #12 of 16

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

post #13 of 16
Thread Starter 
Quote:
Originally Posted by DaveOmak View Post
 

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

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

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

post #14 of 16

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 ???

post #15 of 16
Thread Starter 
Quote:
Originally Posted by DaveOmak View Post
 

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 ???

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.

post #16 of 16

Check with stores that sell wood burning stoves, they have gasket making material and sealing compounds that are designed for higher temps than the grill can achieve.

You can check these places out also:

 http://www.bbqgaskets.com/  

http://www.bbqsmokermods.com/

http://www.stovegaskets.com/

http://www.bbqsmokersupply.com/

http://www.islandoutdoorllc.com/

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