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| | | | Joined: Mar 2016 Posts: 15 New Guy | | New Guy Joined: Mar 2016 Posts: 15 | What's up everybody. I finally pulled the trigger and bought my first project.
I picked up a 1950 3800 dually.
Since I got it I've replaced the plugs, points (set the proper gap), replaced the condenser, tank, fuel lines, fuel pump and a rebuild kit for the carb. Checked the float levels, they are good.
My problems are: small fuel seepage out of the top half of the carb. (New gasket) there is some pitting around the bolt holes.
The truck starts up great, little choke, couple pumps and she fires right up. It idles nice sounds pretty good too. But as soon as I try to give it gas it burps and sounds like it's not getting fuel. I can ease into but it dies out if I go any quicker on the pedal.
Any and all help would be much appreciated.
Derek
50' 3800 dually
| | | | | Joined: Feb 2004 Posts: 29,803 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,803 | It sounds like it's lean or has late ignition timing. Try advancing the timing a few degrees, and also check for vacuum leaks. Run an unlit Propane torch around the intake and carburetor base gaskets to see if it's sucking air anywhere except right down the carburetor throat. How does it respond with the choke knob pulled partway out?
Jerry
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| | | | | Joined: Mar 2016 Posts: 15 New Guy | | New Guy Joined: Mar 2016 Posts: 15 | Thanks for the reply!
I'll have to double check the timing and give the propane torch a shot, thanks for there'll,
I'm new to these trucks and just getting to know how they work.
Derek
50' 3800 dually
| | | | | Joined: Feb 2015 Posts: 273 Shop Shark | | Shop Shark Joined: Feb 2015 Posts: 273 | Engine off and gas in the carb, make sure you see a squirt of fuel go down the throat of the carb when you open the throttle fairly quick. The accelerator pump (dashpot) is exactly what is engineered to prevent what you describe. Not sure what carb you have, but if a required check ball isn't in the right spot, or spots, the accel. pump won't work. Some have linkage that has to be on in the right direction or it won't work. General mechanical ideas that apply to most carbs. This may be yours...it is a Rochester 1 bbl carb. The Accel. linkage is in red. Make sure it is connected as as seen and moving when you open the throttle. https://www.dropbox.com/s/y6418pvvhfz00lq/Rochester%20B1.png?dl=0Larry W.
1953 3800 Dually Flatbed
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