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Fixing the old truck

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#38118 07/31/2002 2:03 AM
Joined: May 2002
Posts: 19
J
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I have a 1950 216 six cylinder and im not getting any fuel to the carb. A while ago I replaced the fuel pump and it ran fine. Then, it sat for a while and when i tried to start it again, nothing. I pulled off the fuel line that runs from the pump to the carb and checked it for clogs. it's fine. when i did this fuel ran out of the pump outlet so i guess that the line from the tank to the pump is ok. what do you guys think? I'm stumped.

#38119 07/31/2002 2:22 AM
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Posts: 40
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I happened to surf by, so I'll answer, but i am always wrong when diagnosing engines. My guess is the carb is crudded up and the float is stuck. Did you pop open the carb and clean the float and valve with carb cleaner? It won't take long and it's easy.
unbroke


Can U believe it? My wife says: "I want an old pickup truck" so I HAD to buy it!!
'50 Chevy 3100 5 window.
#38120 07/31/2002 2:34 AM
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The problem is not the carb because i disconnected the fuel line where it goes into the carb and turned the engine over a bunch and no gas at all came out of the fuel line.

#38121 07/31/2002 2:53 AM
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Jon Z, sometimes the valves in the fuel pump (especially new or rebuilt ones) will stick to their seats from sitting unused. Or, the rod from the diaphram is disconnected from the operating lever; which could happen if there is a collapsed return spring in the pump.
I would pull the pump off, disassemble, clean and inspect. Chances are that is where your problem lies. smile


*** GMC ***
#38122 07/31/2002 3:16 AM
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I've already cleaned up for the night and wont have time to go trying that for a couple days but that sounds very very probable. I'll let you know how it came out. I appreciate your input and if anyone else has 2 cents, put it in.

#38123 07/31/2002 4:22 AM
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Pour a little fuel in the carb throat and see if it will start. It might keep running. If it stalls out you have a fuel delivery problem. Or if it won't start at all it isn't a fuel problem.


54 3100 with 235
62 flatbed dump C60 with 261
#38124 07/31/2002 2:57 PM
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My 42 216 will not pick fuel up once empty until I pressurize the line. I put around 30lbs into the vent line and then the truck will pick it up and run fine until I run empty again. No gas gauge. As long as i don't run out it will do fine, but once air gets in forget it.

#38125 07/31/2002 7:48 PM
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You do have fuel in the tank correct? I have been there before :o
Try the fuel in the carb (just a little).If it starts on the first dose try maybe two or three times to get it primed.


There is enough good in the worst of us and enough bad in the best of us that it does not behoove any of us to criticize the rest of us.
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#38126 07/31/2002 11:55 PM
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a long time ago, when I was 16 I had a '32 plym@outh and i used to put pressure in the fuel tank to sent fuel through the system. I took a piece of inner tube with the valve and clamped it on the fuel filler neck with a radiator clamp. then I pummped air into the tank with a bicycle pump. the pressure sent the fuel through the fuel pump and into the carb. newer cars have vented tanks but not old trucks!
unbroke


Can U believe it? My wife says: "I want an old pickup truck" so I HAD to buy it!!
'50 Chevy 3100 5 window.
#38127 08/01/2002 4:57 AM
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Jon Z:

Do you happen to have an inline fuel filter between your fuel pump and your carburetor? When I bought my 53, it had Carter fuel filter with a sediment bowl. It had sat for awhile in the previous owners yard. When I tried to start it, there was no fuel getting to the carburetor. We thought it was the pump. After replacing it with a new one, it still was not getting fuel. We took the fuel filter off and hooked the fuel line directly into the carburetor. Started with no problem. I took the fuel filter bowl off and found that the rubber gasket had melted together. This elimated the slits in it that allow the fuel to run through it in to the carburetor. Just a simple thought that is pretty cheap to fix. Hope that one of these ideas help you out.

Rugo
53 3100
Smokem if you gottem, if you haven't gottem, I know where you can gettem.


Steve Rugg
53 3100

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