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Matt_h2os

Leak finder?

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Just noticed that my big Joe is still registering 160 more than 24 hours after my cook and after I'd closed it down. I obviously have air getting in somewhere, but is there a way to find out where the leak is? I hate to waste so much lump with each cook. This was only my 4th cook and I lobe everything about it, but this is kind of a PITA.

 

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I had a bad thermometer on the keg when I first got it ( BK replaced it fast no probs, positive C.S.) that wouldn't go below like 250. You sure it's not the thermometer?

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Does it sit in the sun?  Temperatures can rise well above ambient temperature just from that.  Open the lid and see if it re-ignites or flames up and you will know.

 

To find a leak, create some (lots) of smoke and shut her down and see what comes out.

 

Best of luck and happy cooking.

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2 hours ago, T Yelta said:

Does it sit in the sun?  Temperatures can rise well above ambient temperature just from that.  Open the lid and see if it re-ignites or flames up and you will know.

 

To find a leak, create some (lots) of smoke and shut her down and see what comes out.

 

Best of luck and happy cooking.

This. /\ Start some lump and get some wood chunks going really good and shut it down with the smoke rolling, should be able to see where it's coming out.

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Not the thermometer, and I thought it might

be placement, but when I opened the dome I saw red coals. I'll do a smoke test in the next day or 2 and see what I can find. Thanks for the info!

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I never had what I thought were slow shutdowns after closing the vents.  However, after owning my BJ for 16 months the silicon seal around the lower vent started to pull away from the ceramic.  It took a while to find a clear high temp RTV silicone, but once I did I removed the lower vent, cleaned the old silicone off and put a new bead between the vent and the ceramic, as well as on the top and bottom. Mine had no silicone under the stainless from the factory, just two small strips of adhesive.  I originally did this because the old seal looked ugly, not because I thought I had an air leak.  However, I have noticed the coals now snuff much faster than before.  I now close the vents, wait 20 minutes and then open the lid to accelerate cooling.  I couldn't do that before without having red coals leftover.  It still takes a while for the ceramic to cool, cant change that.   

 

Not saying that your lower vent is the source of your leak, but if the easy fixes don't work you might take a look at it.

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Definitely going to look at that silicone seal again. I noticed from the factory there were a few holes in it- I sealed them but it is possible they opened again. Any idea what brand of silicone you used? 

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Well I finally got to test for a leak-the only place I saw smoke coming out was at the very top of the vent. Would that be an area of concern? Will try the dollar bill test next-

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