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1948 - 1956 F1, F100 & Larger F-Series Trucks Discuss the Fat Fendered and Classic Ford Trucks

Fuel pump issue

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Old Nov 9, 2024 | 04:19 PM
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Fuel pump issue

Truck won’t start 1949 ford f1 6cyl 226cu, it seems to not fill up the inline gas filter, so I disconnected the line and had some one crank the truck, nothing was spitting out the fuel pump. Took off the fuel pump, tell me what you all see. Is it worn out ?



 
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Old Nov 9, 2024 | 04:44 PM
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Can't tell much from pictures. However, some thoughts:

1) Replace/Rebuild Pump. (Can provide sources later if you are interested)
​​​​​​2) Inspect/replace the fuel lines. Any little defect/leak will prevent the pump from developing vacuum to pull fuel through.
3) Inspect the fuel pump pushrod. They can wear to the point that the fuel pump level isn't actuated adequately. They can be replaced or welded back up. (V8 only, just realized you have a 6 banger, so there are lobes that can be worn)
4) Don't simply add an electric pump to this setup as there are dangers if not done correctly.
 
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Old Nov 9, 2024 | 04:45 PM
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May just be me, but the arm looks worn. Hook a hose to the inlet, stick the other end in a can of gas, then manually pump it. If you get nothing from this, have a sniff of your engine oil to see if there is gas in the crank case.
 
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Old Nov 9, 2024 | 04:54 PM
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You can't tell by looking at the outside. If it did not pump had them it's time for a rebuild.
​​​​​​
I sent one to Cowboy John in Florida. He media blasted the outside, got bathed the inside, used ethanol proof rubber and shipped it back to me within 2 weeks. He tests his rebuilds on running engines.
 
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Old Nov 9, 2024 | 05:03 PM
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Cowboy John rebuilt some for me too. Modern gas can be hard on the rubber parts. I try to run ethanol free if possible on all my older vehicles.
 
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Old Nov 9, 2024 | 05:16 PM
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Here's a link to his website. He'll charge you $20 to ship it back to you.

I see you have a 6 cylinder. I'm not an expert on 48-52 trucks but That pump looks like an aftermarket pump. I think, repeat think, 6 cylinders had a glass bowl fuel pump.

And 6 cylinder expert will be along soon to correct or confirm.
​​​​​​Also you could check NAPA for a fuel pump.
 
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Old Nov 10, 2024 | 10:08 PM
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So I took the pump off and stuck the line in a gas can and manually pumped it, and it works I’m sure the rod is worn I’m going to melt brass to fix what’s worn but I also ordered a pump from oriellys just in case. Thanks for all the feedback back will let you all know how it goes and once it’s back up and running
 
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Old Nov 10, 2024 | 11:31 PM
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While you're in the fixing mode, switch the Ford plate on your hood. Flip the one on the right to the left and vice-versa. Those of us who are OCD will thank you.
 
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Old Nov 13, 2024 | 08:34 PM
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Previous posters are correct...cowboy john is the man. And my '51 226 flathead has the glass floatbowl
 
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Old Nov 13, 2024 | 08:47 PM
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Here is a link to cowboy John
https://cowboyjohnsautoparts.com/ant...rburetors.html
 
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Old Nov 15, 2024 | 08:59 PM
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So I ended up putting brass on the worn out part but I also bought a new fuel pump from oriellys for about $68 I installed it and truck runs fine! So I have the old fuel pump as a spare
 
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Old Nov 16, 2024 | 04:52 PM
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I'd just confirm you have nominal pressure from the new pump. A lot of them aren't built to spec or QC'd properly, and can pump way over what you need, blowing gas through the carb gasket.
 
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Old Nov 16, 2024 | 07:17 PM
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It’s funny you say that because now I noticed my carb leaking through the gasket in the middle of the carb, how would I go about fixing that issue
 
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Old Nov 17, 2024 | 09:32 AM
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You'd have to check the pressure coming out of the pump before you can try to mitigate it. If it's 9-10 psi or under, then you can try a low-pressure fuel regulator and set it for 4-6 psi. They're inexpensive, but can tend to leak after a while. I'm sure you can spend big bucks for a better quality unit, but then why not get a pump specific to your engine from a reputable classic Ford place. Then again, most of those are also made off-shore now, so quality can still be an issue. If it's over 10 psi, you need a proper pump.

I have this setup on my 226 right now. Inexpensive gauge on a nipple adapter for a rubber line between pump and carb. You can also use a vacuum gauge temporarily just to test the output. I recently put on a new Daytona carb and they recommended checking the fuel pressure before installing it, because so many modern pumps are built poorly. A few years ago, I put a new pump from either LMC or Dennis Carpenter (with the proper glass bowl) and have been pretty lucky, but I wanted to test it out anyway before installing the new carb. This one puts out just under 6 psi running (not running in this pic).

 
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Old Nov 17, 2024 | 10:12 AM
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Fuel PSI should be 4-5 psi for the 6 cylinder or one risks overcoming the float/needle in the carburetor.

One can install an inline pressure reducer between the fuel pump and carburetor or stack gaskets/shims to adjust pump actuation. On the 6 cylinder, these are between the fuel pump and block. On the V8, this is done on the fuel pump housing and intake manifold.
 
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