Question about Coleman 2 Burner Dual Fuel 424-700G Grill

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Coleman 424 Dual Fuel -- High, yellow flame

Coleman 424 Dual Fuel -- The stove lights easily, but burns with a 'high yellow flame' as if it were flooded (it wasn't) or as if there is a fuel leak. If that latter is true, what does one do about it? I re-lit the stove a couple of times and it was usable, but even the next day (more than 12 hours later) I still had the same problem though to a lesser extent. Never had any problems with the stove before and have only had it three or fours years, so it has not seen that much use.

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Are you pumping the tank up all the way? I have the same problem if I have too little pressure in the tank. The instructions say pump 35 times. Try pumping 50 or 60 times- that seems to help.

Also, you can't light this one like an old 425. My old stove you could turn the gas on and then take a match neat the burner. For this stove, hold the match near the burner with the gas off and quickly turn it on.

These are two things that seemed to help me with the same problem.

Posted on Jul 25, 2009

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It's normal for a yellow flame in the beginning while warming up. If it doesn't go away, you have a leak or a fuel air mix issue. Look at the manifold where teh generator plugs in. If this is clogged with bug nests/etc, your starving it for air. Other causes are overfilling the tank, or clogs in the feed line.

Posted on Jul 19, 2009

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Hi my coleman 533 has orange flame not blue it has good pressure i have taken jet of end of generator and cleaned it


Orange or yellow flame is usually an indication of too much fuel, or not enough air mixture. Make sure all areas where burners would receive air from, are cleaned of spider webs, debris etc., and be sure when set up, nothing is close to it that would block that air flow from entering.

May 27, 2011 | Coleman 2 Burner Dual Fuel 424-700G Grill

1 Answer

What would cause a high yellow flame on a 2 burner duel fuel stove after it has been on for a while? Could wind cause this or maybe a bad generator?


The pressure drops and so you have to pump it up a little every now and then. What I do is pump it up a hair. Reset the flames to a pretty blue. Yellow flame is too much fuel to air ratio. An air shutter adjustment is needed. Also dust in the burner can cause the secondary air to have an improper mix

If you need further help, reach me via phone at https://www.6ya.com/expert/dan_73bbd84fe1d95b61

Apr 20, 2010 | Coleman 2 Burner Dual Fuel 424-700G Grill

1 Answer

My coleman 424 stove has been sitting in shed for a coulpe of years, now got it out again. Filled with petrol when pumped up I can light it but flame only lasts a few minutes then it dies as if no...


My best answer is that your pump seals have dried out and are allowing pumped up pressure to leak back past the pump seal
Try this: DO NOT LIGHT THE STOVE
Pump it up hard then quickly attach a small balloon with a rubber band around the base of the pump - where it contacts the tank. A deflated balloon or a small plastic baggie - does the balloon begin to fill with air after a few minutes - if yes then your seal is leaking.
You might try taking the pump apart and soaking the seal overnight in fuel reinstall and see if it cores your problem
Good Luck

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1 Answer

VALVE WHEEL LEAKS


Here is Coleman's repar part website.
You may want to replace the valve if it is leaking.
http://www.coleman.com/coleman/parts/product_category2.asp?category_id=210

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Got my solution by talking to a fellow at REI. He showed me how to take the Coleman apart and check for problems.

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I had a similar problem today, After taking the ump assembly to pieces i disovered that the pump"stem" needed turning slighty anti clckwise to allo tepresure to build up inthe tank. I felt very stupid buta big learning curve for me.

Sep 28, 2008 | Coleman 2 Burner Dual Fuel 424-700G Grill

1 Answer

Having a problem with burners not generating .


so you have a yellow flame, not blue?
my mate had same problem. He now uses unleaded, adding 10 drops Redex to a gallon.
He was also told not to overfill the tank - just 3/4 full.
Works much better but he says not perfect.
Ian

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