Thread Tools Search this Thread Display Modes
Old 03-20-2009, 01:18 PM   #1
Rivet Master
tphan's Avatar
1972 27' Overlander
Longmont , Colorado
Join Date: May 2005
Posts: 951
'72 cooktop w/ yellow flames! Help!

Hi- my original '72 4-burner cooktop works well on 3 of the burners, but the 4th spews yellow flames. Up near the front of the unit, by the on/off valves, are baffles that can be adjusted, for air inflow, I guess. All 4 are adjusted about the same (1/2 open), and monkeying with it did not get rid of the yellow flame. Just in front of these baffles is a threaded, brass fitting, inside of which is a needle valve, of sorts. What function does this fitting serve, and what effect does either tightening or loosening this fitting have? Does it have anything to do with gas output/ mixture etc,? This faulty burner also does not readily light from the pilot, so something is amiss here. Could the fault lie in the burner itself, a disintegrated gasket maybe, or some other air leak causing the yellow flame? Thanks for any info!

tphan is offline   Reply With Quote
Old 03-20-2009, 01:44 PM   #2
Rivet Master
VIKING's Avatar
1955 22' Flying Cloud
Boulder Creek , California
Join Date: Nov 2008
Posts: 1,177
It could be from a loose burner, or the fitting where the pilot tube goes into the burner may have come loose. I'm not sure if yours is the same as my '64, but mine has a metal tube about 3" long going from the bottom of each burner to the area of the pilot light. The tube attaches to a brass or aluminum 90 degree "L" fitting that goes up into the burner. I had one of the 90's come loose and it caused the same thing you have described. The pilot would not light that burner and if I lit it by hand it burned yellow. It could also be caused by corrosion or a spider web in the burner tube somewhere. It doesn't sound like a simple adjustment gone bad. I would clean and inspect that burner before adjusting it.
Good luck, Rich

VIKING is offline   Reply With Quote
Old 03-20-2009, 02:22 PM   #3
Rivet Master
centennialman's Avatar

2016 20' Flying Cloud
Centennial , Colorado
Join Date: May 2006
Posts: 1,321
The threaded brass fitting may be the culprit. It could be an "air mixer" of some sort. You might call an appliance repair place and run it by them.

I have an antique restaurant gas stove in my kitchen and the repairman taught me how to use the set screw to mix the air correctly for a blue flame.

Good luck
Steve "Centennial Man"
centennialman is offline   Reply With Quote
Old 03-20-2009, 03:30 PM   #4
Rivet Master
Diesel1's Avatar
1967 24' Tradewind
Wickenburg , Arizona
Join Date: Aug 2008
Posts: 546
A yellow flame is rich (to much fuel, no oxygen) The little butterfly valve you mentioned is to let air(oxygen) into the fuel to get the proper air/fuel ratio.Maybe the tube under the butterfly valve is plugged and not letting the air into the fuel stream. Adios, John
Diesel1 is offline   Reply With Quote
Old 03-20-2009, 06:27 PM   #5
Rivet Master
tphan's Avatar
1972 27' Overlander
Longmont , Colorado
Join Date: May 2005
Posts: 951
Thanks, all- I will check everything mentioned in your replies.
tphan is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Magic Chef Oven Pilot flames/blows out HansenClan LP Gas, Piping, Tanks & Regulators 3 09-22-2008 10:28 PM
Cooktop help! paulb Stoves, Ovens & Microwaves 1 11-20-2006 03:40 AM
Best Cooktop? KHarris Stoves, Ovens & Microwaves 2 09-24-2006 03:22 PM
Up in flames fuzzywickle Our Community 7 09-23-2005 10:24 AM
got flames? john hd Airstream Motorhome Forums 3 02-09-2003 07:54 PM

Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 07:19 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.