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BBQ question: Propane ignites at the venturi, why ?

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BBQ question: Propane ignites at the venturi, why ?

Old 07-08-2017, 02:23 PM
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Default BBQ question: Propane ignites at the venturi, why ?

Just rebuilt the BBQ with new burners, ignitor, etc. One side ignites at the venturi. Not sure why. Tried the air inlet (carburetor) adjustment to no avail. Any ideas what the problem may be ?

The BBQ is connected to the low pressure side of the regulator of the in ground tank that supplies LPG to my home. Prior to changing the parts it seemed to work fine.

TIA
Old 07-08-2017, 02:41 PM
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Move the igniter away from the Venturi and further down the flame bar. You can also use 5200.but you will never get it apart again.
Old 07-08-2017, 03:03 PM
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I would think too much air in that location allowing the gas to burn.
seen it a few times but never figured it out as it was not my unit.
wrong size office, burner, or wrong pressure
if the burners are all that are different then switch them around to see if that moves the problem
Old 07-08-2017, 03:46 PM
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You don't have a BBQ you have a gas grill that is the problem
Old 07-08-2017, 06:09 PM
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propane spiders will clog up the venturis. make sure the burner tubes are clear.
Old 07-08-2017, 06:21 PM
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There are normally flame arresting screens after the venturis. If the flame is coming back that far you likely have burners that are deteriorated and the supply to the burners are deteriorated as well....

Replace the burners and the venturi sections.
Old 07-08-2017, 06:23 PM
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Verify the pressure, low pressure will cause that
Old 07-08-2017, 06:26 PM
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Make sure the orifice isn't partially clogged
a paper clip wire will fit in a natural gas orifice but you will need something smaller in diameter to fit through a propane fitting.
Old 07-09-2017, 06:10 AM
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Originally Posted by treasure island scout View Post
You don't have a BBQ you have a gas grill that is the problem
Right.. BBQ is an entree, not a piece of equipment or an event.
Old 07-09-2017, 06:18 AM
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You're doing two things wrong:

- you have a grill. BBQ is pig

- if you ARE actually fixing BBQ, you ought not be using propane.



Hope that helps.
Old 07-09-2017, 08:08 AM
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Originally Posted by treasure island scout View Post
You don't have a BBQ you have a gas grill that is the problem

YEP, that is a GRILL

BBQ is what we eat

JK


Had same problem with my old Jennaire grill several years ago, after I looked into buying all new "plumbing " lines and controls I was going to have more tied up in it that I wanted

Just bought a Weber Genesis , However young guy from Lowes that delivered my new grill asked what was wrong with old one. I told him and he asked if he could have it, they were going to haul off any way. He said he could repair it .

My problem is I have zero sense of smell and I am sure I could have re done the gas lines but I just don't like screwing with it since I can not tell if it is leaking or not.
Old 07-09-2017, 08:23 AM
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I just had the same problem with my Bull Grill. One of the burners had flames coming out around the adjustment know from the venturi.

I googled it and found what worked for me. The flame tube after the venturi was clogged with webs which created back pressure at the venturi. Cleaned it out and it's as good as new.
Old 07-09-2017, 08:27 AM
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Originally Posted by tprice View Post
YEP, that is a GRILL

BBQ is what we eat

JK


Had same problem with my old Jennaire grill several years ago, after I looked into buying all new "plumbing " lines and controls I was going to have more tied up in it that I wanted

Just bought a Weber Genesis , However young guy from Lowes that delivered my new grill asked what was wrong with old one. I told him and he asked if he could have it, they were going to haul off any way. He said he could repair it .

My problem is I have zero sense of smell and I am sure I could have re done the gas lines but I just don't like screwing with it since I can not tell if it is leaking or not.
Guy from Lowes is pretty smart. Jennair has a lifetime warranty on parts. Replaced all my internals a few years ago. Buddy of mine replaced his internals twice so far for $0. Both of our grills are at least 15 years old and still going strong.
Old 07-09-2017, 05:28 PM
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Originally Posted by Marco_boater View Post
I just had the same problem with my Bull Grill. One of the burners had flames coming out around the adjustment know from the venturi.

I googled it and found what worked for me. The flame tube after the venturi was clogged with webs which created back pressure at the venturi. Cleaned it out and it's as good as new.
So the brand new burner (flame) tubes that I just installed might be clogged with webs ?

Old 07-09-2017, 07:27 PM
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did you look inside of it before installing to see if it were clear?

something was keeping the gas from flowing well as it should have
Old 07-10-2017, 10:10 AM
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Originally Posted by CLM65 View Post
Guy from Lowes is pretty smart. Jennair has a lifetime warranty on parts. Replaced all my internals a few years ago. Buddy of mine replaced his internals twice so far for $0. Both of our grills are at least 15 years old and still going strong.
I did not think it applied to the gas lines themselves, they replaced my burners and shields several times. Good customer service however I think that ended when it was not the original owners anymore

They really were/are good grills. Not sure why Lowes quit carrying them, my guess was Lowe's wanted them to lower production costs so much it compromised quality
Old 07-10-2017, 10:13 AM
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Mud dobbers routinely clog the nozzle on my fish cooker.
Old 07-10-2017, 02:16 PM
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Originally Posted by Marco_boater View Post
I just had the same problem with my Bull Grill. One of the burners had flames coming out around the adjustment know from the venturi.

I googled it and found what worked for me. The flame tube after the venturi was clogged with webs which created back pressure at the venturi. Cleaned it out and it's as good as new.
That was it
Stripped it down and there was a leg of an earwig or some shit like that, not much at all and hardly able to see on the back side of the venturi. How it got in there is a mystery.

Amazing that something that small could mess up the flame.

Thanks buddy
Old 07-10-2017, 02:17 PM
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Originally Posted by NCSUboater View Post
You're doing two things wrong:

- you have a grill. BBQ is pig

- if you ARE actually fixing BBQ, you ought not be using propane.



Hope that helps.
Duly noted, tanks (not propane tanks).
Old 07-10-2017, 02:19 PM
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Originally Posted by BoatP2Lee View Post
Right.. BBQ is an entree, not a piece of equipment or an event.
I guess you haven't run BBQ on the search at Urban Dictionary

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