Gas Smoker gets to hot on low setting

[core cycle]

I have a Brinkman Vertical gas Smoker and with the setting on low the temp goes to 300*F no way to get it any lower, any suggestions??
mabey vent holes on top?
Thanks
Old Dewey

 

[grothe]

Do ya have water in the water pan?
I've noticed when my water level gets low, my chamber temp starts to climb.

 

[graybeard]

if you do have water in your pan open the vents. Matter of fact open the vent anyway about a 1/4 or more.. you must have air circulation.

 

[smokingscooby]

What kind of thermometer are you using? The stock one that came with the unit is probable off. Check it with a digital therm. Holes in the top would help.I would use a vent cover to make the size of your hole on top adjustable.

 

[wutang]

Here is a link for a mod for installing a needle valve. This should help you achieve control over lower temps.
http://www.smokingmeatforums.com/for...t=needle+valve

 

[mgnorcal]

Another option I think is an adjustable regulator like this:

0-30 Adjustable PSI Regulator

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probably more expensive, but fewer parts

 

[core cycle]

Thank you everyone who answered my questions with some good Info.
Jack