Anyway, I’ve not seen anyone complain about this problem online, but since you’re clearly a Coleman vet, I was wondering if this is a problem Reply I've cleaned out the burners themselves, but perhaps I'll take another pass at the expansion chamber area. But I am trying to figure out how the initial fuel-into-the-manifold should be working, to see if something is too rich or igniting early. The lanterns get used lots because make great heaters,just drop one behind your chair while sitting around the fire at night, you’ll burn them for hours once you try it… (yep I laughed at first and called someone a wimp when I seen it, but once I tried it, I went out and got three more lanterns the next day) If you use a larger bottle, pour off the gas, and toss the water add some epson salts (Magnesium sulfate, common bath salts) to the bottle of gas shake it, let it settle, let it clump in the bottom and filter it again, and you will have ethanol free fuel.. Both box stoves are rather bulky and heavy, but they provide a sure platform anywhere on dry land. If you are driving to a destination, those points are of no concern.

I bought my barely used 424 Duel Fuel after my 425F quit working. I had the 425F since 1980. It never failed me. I have a older Coleman 424 2-burner camp stove, and am using Coleman fuel. I am having some trouble getting it started in normal warmer weather, and have occasion had the huge-flaming-metal-box to deal with due to excess fuel burning off. These stoves have gone everywhere from tailgate parties, multiple week hunting camps, emergency cooking in a week long snowstorm at my home, not to mention the inumerable family outings. My dual fuel stove has performed outstandingly all these years. I had one hiccough at a concert where the stove would pop then go out but I just unscrewed the needle valve, cleand it then continued on cooking. This stove takes a little skill to use but once you get the hang of it, it will be a camping buddy for life.

USER REVIEWS

On 425F, the secondary burner is so small, it takes too long to get a liter of water to a boil. It is only good for simmering, in my opinion. Now 424's secondary burner will bring it to a rolling boil. Now you can cook the pasta while you get the meat sauce ready.

Right now, after lighting/warming up for a minute or two and turning the lighting lever down on the right side burner, the burner flame is bigger and yellow, and I am getting some flame out of the tube learning into expansion chamber in the manifold, and flame in the expansion chamber as well. Often, I get sudden popping and a "jet-engine" sounding noise from that area. Oddly, if I engage the second burner, it seems to get both burners working normally steady-state with nice clean blue flame circles. Testing fuel for ethanol is actually very simple, all you need is an old water bottle or glass bottle, a felt pen, some water and fuel you want to test. But the simplest way to fix a dry pump cup is to just pull the pump out let the cup soak in oil for 10 to 30 min wipe it off so it’s not dripping, reinstall and then add a drop or two every week, brake fluid works great for this since some brake systems use leather parts and it make them last longer ( just don’t use it in your brake system if the bottle has been open for more then a few days as it’s hydroscopic and will absorb water overtime affecting your braking system or if you have dropped the pump cup in the bottle, any sediment in the bottle won’t do your brake system any favors, I normally just use the left over fluid saved after doing a brake / clutch job since, if you’ve done the job right you won’t ever need any more fluid) Reply But it is easier once you know it’s ethanol free to fill a Jerry can at the pump then making your own.

201030 Coleman Unleaded Stove 424 Pump Plunger

The firepower and the flame control were superb, and the flame extinguished immediately when the control knob was turned off. There was no lingering flame in the burner. (Caution: if you max out the flame while using only the main burner with a wide frying pan covering the most of the grill, the paintjob near the fuel tank will burn and darken. The main flame gets that large!) It was brand new, so I didn’t think the manifold was clogged. I pressurized the tank, detached it from the stove, and just tried to spray fuel into the air. This didn’t work well. The fuel seemed to be spraying out behind the tip and not through it. Some fuel dribbled out, some sprayed out intermittently in different directions, and a good deal seemed to build up in the generator itself. If your going to burn diesel long term get a stove built to burn it, like a MSR wisperlite international or there dragonfly international ( they burn pretty much anything and simmer nicely ) but take a rebuild kit or two because you won’t find parts outside of north america / Europe and don’t expect a 50 year life out of them like coleman stoves deliver they have to much plastic in them to last that long, and they are not built for cooking for a crowd four to six people are about the max … Reply I recently acquired a Coleman 425 stove from the Goodwill so I thought that I would sit it next to a 414 and take some pictures to compare the size of the two units. The 414 is the larger with the silver fuel tank and the 425 is the smaller with the red tank. One big downside: you can't really turn the stove off. If you turn the burner off completely, the flame keeps burning on low for minutes and minutes. So the only way to turn the stove off is to remove the fuel compartment and then find a safe place to set it. Even then, fuel keeps leaking out. The one minor advantage to this is that you can simmer very effectively for a few minutes. Ease of set-up

Just after I opened the box, enclosed owner's manual for 424 showed me how to fix the generator problem. Instead of buying a new one, I just cleaned the needle (with 220 grit sandpaper) and the coil (with a Dremel wire brush) inside the generator tube, and reinstalled the assembly. I wanted to install a new one, but the local hardware store priced it so high, that it was not worth buying for a 23 year-old stove. My 425F now works just as good as the first day I bought it.This is a compact stove. However, if you store the fuel compartment in the stove (the logical place) this stove will really rattle when you drive. Plan on having some rags around to quiet the rattle. Value You draw a line about two inches from the bottom of the bottle, fill the bottle with water to this line, then add the fuel you want to test, cap the bottle give it a good shake, let it stand for a few minutes if the water increases you know it’s got ethanol, and if it is less then 5% ethanol the line might drop slightly but if it holds your good to go, and if you can lay your hands on a graduated cylinder you can actually calculate the ethanol content, but if your in the middle of no where land (yes I’m envious) a bottle and a felt pen or even a piece of tape for a line shouldn’t be to hard to find.. Normally I will use a long skinny bottle so you don’t waste to much fuel, and I save it for later and use it to start a fire.