Low Burner Flame


 
M

Michael Winthrop

New member
I have searched this sit for answers to my problem. Over the past year replaced everything but the Manafold. Didn't find exactly what I needed. But did get some good hints as how to. But finally I pulled apart my burner and manafold, checked the jets found one was clogged and the 2 others had some buildup that didnt allow all the gas through.

Well didn't have the exact size drill bit to clean it out so I went a little bigger. Yes I know too big will give me a sooty flame best for natural gas hookup. But it did increase the voliume size of the flame now I dont have to run it at high just to get the grill heated up.
Thought you all might like to know , to get a bigger flame I used a 3/64th drill bit. Not sure what the original jet size is. But I am happy with it now, it was just never hot enough.
 
Doing what you did is dangerous. Unless you know how to properly size the jet for the gas pressure you have things can turn ugly in a heartbeat
 
not sure how it could be dangerouse but then i'm not a gas pressure expert. i would think it would actually lower the manifold pressure. but yea, anytime you alter something you do need to be more vigilant.
 
The manifold pressure won't drop by sizing the orifice a little larger. Your natural gas BBQ is rated for 7" wc. You shouldn't have any problems with it. However you have now altered the appliance outside the manufacturers specification so if there is ever an issue, such as a fire, your insurance company will gladly negate your policy and not pay up. Yes they will inspect the BBQ and find the altered orifices. The chances of the BBQ burning down your house are slim though so don't lose sleep over it.
 
The regulator on the propane tank has a safety device inside that cuts down the flow of propane if the valve is opened too quickly. You have to open the valve REALLY SLOWLY. It should take AT LEAST 30 seconds for you to turn the valve all the way from fully closed to fully open. If you turn it too fast and the safety kicks in, the grill will only heat up to about 350-400 degrees. I found this out because when I bought my grill, I turned the valve too quickly and this happened. I called Weber customer support and they explained to me how it works. I had to close the valve and wait 15 minutes (I think) before trying again. After that it worked fine. My gf turned on the grill to pre-heat it about a week or so ago and didn't know to turn the valve slowly. Sure enough, when I got home it had been on 15 minutes or so and was only around 400 degrees. I shut everything down and waited and fired it up correctly. The temp was upwards of 600 degrees after about 15 minutes.

Not sure if natural gas has the same issue?
 
You'll find if you disconnect the regulator from the tank and then reinstall it, the pressure will equalize so you wont have to wait 15 minutes just open the valve slowly.



JimS said:
The regulator on the propane tank has a safety device inside that cuts down the flow of propane if the valve is opened too quickly. You have to open the valve REALLY SLOWLY. It should take AT LEAST 30 seconds for you to turn the valve all the way from fully closed to fully open. If you turn it too fast and the safety kicks in, the grill will only heat up to about 350-400 degrees. I found this out because when I bought my grill, I turned the valve too quickly and this happened. I called Weber customer support and they explained to me how it works. I had to close the valve and wait 15 minutes (I think) before trying again. After that it worked fine. My gf turned on the grill to pre-heat it about a week or so ago and didn't know to turn the valve slowly. Sure enough, when I got home it had been on 15 minutes or so and was only around 400 degrees. I shut everything down and waited and fired it up correctly. The temp was upwards of 600 degrees after about 15 minutes.

Not sure if natural gas has the same issue?
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I did try one first and then did the rest. But I am surprised how there was no mention of cleaning the jets, when searching the forum. Guess they want you to spend money on replacing parts, As I have done.


George Curtis said:
not sure how it could be dangerouse but then i'm not a gas pressure expert. i would think it would actually lower the manifold pressure. but yea, anytime you alter something you do need to be more vigilant.
Click to expand...
 
Safety always paramount in my professions. I'm an electrician and build/competitivly shoot Sub-machinguns...............



George Curtis said:
not sure how it could be dangerouse but then i'm not a gas pressure expert. i would think it would actually lower the manifold pressure. but yea, anytime you alter something you do need to be more vigilant.
Click to expand...
 
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