200A and 202 reproduction
frames back
in stock.

nikdanger
Good morning!

This may have been asked before, I checked the posts, couldn't find answer.
Have 425E from 1973. Never used it.
Pump not pressurizing tank.Soaked pump assembly with leather cup in hydraulic jack oil overnight - bottle states good for leather gaskets...
Pump still not pressurizing with now lubricated leather pump cup.

Could the leather cup just be too old ?  Replace it?
Something else?

Thanks for any advice in advance.

Nik
I love Jesus --> I fall down, get up, walk some, fall down get up, walk some, hopefully to fall less,walk more.
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Phredd
Can you tell if you are building up pressure on the tank? 

Phredd
ICCC#1799
Coleman Quick Lite Crew #40
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jhall1964

Hi Nik!:
I'm a complete newbie myself, but I've had a similar issue with a couple of Coleman tanks one on a stove and one on the lantern I just got.  I oiled up the leather on the lantern overnight, just like you did, and when I tried to pump, same as before.  I should have been clued in after my experience with the stove tank, but well, you know.  Anyway, I held the lantern up to my ear and I could hear a hissing while pumping on the pump.  At first I thought it was leaking from the valve, but then I got the bright idea to try a fuel cap with a brand new washer on it.  Now she pumps up fine.  I'm beginning to believe that it's one of the first things one could check for when working on these.  The old fuel cap gaskets just don't seem to hold up after 40-50 years.  Old Coleman Parts (our GREAT sponsor)  can even sell you a cap with a brand new gasket already installed.  Check your fuel cap and see what happens.

Sincerely,
J.W. Hall
ICCC#1963

jhall1964
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nikdanger
Thre is no pressure build up as I continually pump it. 35th pump produces no back pressurre "feeling" in my fingers/hand as does the first pump stroke.
I love Jesus --> I fall down, get up, walk some, fall down get up, walk some, hopefully to fall less,walk more.
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jhall1964
Hmm, that's a tough one, maybe one of the experts on this great forum will chime in and find the answer.

Sincerely,
J.W. Hall
ICCC#1963
jhall1964
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DanLee
Test the pump by closing the check valve and pumping.  If the washer is working, you won't be able to do a full downstroke.  If it works, pressure is leaking from the tank somewhere, probably through the fuel cap or possibly you have a hole in the tank.
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Gunhippie
Turn the pump cup inside-out when you oil it. It will fluff it out so it fills the pump tube.

Replace your fuel cap gasket. Unless it's only a couple of years old, it's trash and not holding air. I just replace all of them as a matter of habit.
It's priceless until someone puts a price on it.
Walk a mile in a man's shoes before you criticize him--then you're a mile away, and he has no shoes.
Texan's last words: "Y'all--hold my beer--I wanta' try sumptin'."
Timm--Middle of nowhere, near the end of the road, Oregon.
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