It's all just nuts and bolts to take apart, but don't unless you have too. Too easy to break old stuff. Before you worry about "blockage'....... With it low on fuel you will have to pump a LOT. Keep pumping. More. Tired yet? More. Oiling and massaging pump cup always a good idea on old stuff.
Added more fuel and pumped at least 30 times. I had trouble getting the first burner to start. Some fuel leaked out again by burner 1 knob. No luck with the other burners starting either. Ideas?
Worry about the main burner first. First off, pump more! If pumping improves things, keep pumping. It is possible that your generator is plugging with debris from year of use. Did it have fuel in it when you got it? That stove looks too nice to have used hard. Loosen the line that goes to the main generator, now open valve on tank, and see if fuel come out. Should be a good amount. If good fuel getting to generator, and can't get out the business end, generator is plugging. They are simple to take apart and clean.
Still can't really see in pictures, is there a fuel line going to main generator? Does it come from the same valve that feeds the pre-heat generator?
It not a tank pressure issue I pumped a lot on it. There was no fuel in it when I picked it up, but it was repainted at some point in its history. I'm betting clogged with debris of dome sort. The middle burner looks to have some corrosion which is blocking some of the burner slits. I need to go at it with a brass brush. I'll pull things apart to check for blockage. The pilot burner works great but not going into the main burners. What is the packing material to stop the fuel leak on the main burner knob, graphite tape or some type of gasket/ring?
You do not have a problem with air blockage, or you would get high yellow flames. As you surmise, you have fuel blockage. Does the same fuel line that feeds the "pilot" feed the main generator? Who knows what is there for packing at the moment. I would go to Old Coleman Parts, and order some packing tape AND a couple of the Large packings, like wouldfit a stove like mine above. Did you loosen line going to generator? If plenty of fuel coming out, then you need to take generator apart and clean it. Very simple. Easy to clean the slits in burner with box knife, feeler gauge etc. Old Coleman Parts > Lanterns > Large Valve Stem Packing - P01 Old Coleman Parts > Lanterns > Graphite Ribbon - P09
I removed the connection from the feed valve and had good fuel flow. Next I removed the line at the generator, again good flow. I then pulled the right burner control knob and pin assembly. Good fuel to that valve. Tried to blow air into the tub to clear any debris. Put every back together and tried to fire it up. First burner sputtered, second burner barely sputtered and third would not light. The first burner went out when I tried to turn up the second and third burners. How do the burners come apart to get the blockage out?
Another quest, are all of the valve stem the same 1/4" ? I would assume so then I can change them all.
The generator needs to come out and be cleaned, not the burners. WIth use, generators plug with carbon and debris, and are replaced or cleaned. This is normal maintenance . Stoves are build so that changing generators is fairly simple. "change them all" I don't understand . All what? No idea if they are "all" the "same" on an AGM. Can you re-phrase this question?
I need to replace the packing on the first burner for sure because of a minor leak. I was planning on changing the packing on the other two as well since I have to pull it apart. The packing for all three is the same correct? Suggestion for cleaner pleas! I'm thinking gun cleaner to remove the carbon buildup.
There is no "packing" on the burners. The packing goes where the valves that control fuel are, it seals the shafts. The generator has packing where the shaft comes out for the knob. The valve on the tank has packing on it's shaft. Burners do not have packing. What leak are you trying to fix?
The main burner control leaks a little fuel where the rod goes through the nut on the side by the tank.
You will want to snug that nut a bit first and see if that fixes it. The Packing is compressed in there by that nut, and often needs a bit more compression. Or, that leak can be fixed with the items listed above at ACP.
