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

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Coleman 424-700G Burner/Pressure Issue

I have a coleman dual fuel 424-700G stove and a lantern that both have the same issue. I mistakenly left fuel in the tanks over a winter and neither now works. I replaced the generators on both and they still don’t work.

It feels like the pumping mechanism is not working correctly. If I try to pump the pump with my finger over the air hole it is difficult to pump and does not feel like it is building up pressure in the tank. I cannot pump up the pressure and close and turn the pump handle to seal it without letting my finger off of the air hole to let air escape. Neither unit pumps like they did when they worked correctly where you could pump smoothly and feel the pressure building up and then easily turn and lock the pump handle.

If anyone can provide any guidance on what the issue might be and what I can try to do to get them back up and running correctly.

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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.

Posted on Jun 07, 2009

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Please take time to rate me

Coleman Generators website...http://www.summitcampinggear.com/lage.html

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