Hey Bill, what kind of stove is it? Details, please, since there are dozens and dozens of white gas Colemans out there. And pics if you can find 'em.
I haven't seen a Coleman you can't rebuild, in theory. Though sometimes it just isn't worth it. It's a tool first and foremost.
Agreed...I have rebuilt both my stoves and lanterns more than once. I tried the china made repair pump with the plastic cup and aluminum knob to pressurize the tank, but it didnt work.
First, if you have an older model Coleman and the
gas tank is empty, and you have experience with working with gas and gas fittings, take the stove outside, pull the pump by removing the C-spring with a longnose pliers, pull out the shaft and leather pressure cup and examine the cup. Carefully, as the old cups are very fragile. If the cup is still intact, lightly grease it and the channel where it slides with vaseline or clean motor oil, reassemble, put gas in the tank, and try it again.
If the leather is split or dryed out and deteriorated, then you will have to replace it....the pump, cup, and plated brass knob assembly itself is repairable. If you can unscrew the cup assembly from the shaft you can repair the assembly.
Go on ebay and type in Coleman stove lantern pump leather cups or variations of those words and get some real leather cups from overseas. They're about a buck apiece.
In the meantime, if you used the china aluminum knob repair kit, go outside, start with an empty tank, pull the assembly as above and grease the channel where the cup rides with vaseline, put in some gas, and try it again.
If you can build pressure, and the stove or lantern still doesn't light properly (big yellow flames) and you have new gas, try cranking the little brass lever on the needle valve. If that doesn't work, you need to replace the generator. On a stove, it is the pencil-sized pipe that sticks out of the top of the tank and goes through the flame of the first burner. Most camping stores sell them.
Be careful, all of this stuff should be done outside and don't tackle it yourself if you have no experience in working with gas or gas fittings. I am an outdoorsman, not a certified repairman, so get advice and instructions from the Coleman Co before attempting repairs. White gas (Napthalene) is highly flammable, and can ignite suddenly.
Good luck and long live the old Colemans.