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Recently purchased my ford. 50 f1 with flat v8. 6v system. Everything is damn near original. It ran great for the first month. It sat for about 2-3 weeks. When I went to start it up the engine cranks but nothing else. Here’s where I’m at. Couldn’t see any fuel squirting into the carb when I pressed the accelerator. I noticed a lot of sediment in the glass bowl on the fuel pump. Looked to me like flakes of rust probably from the tank. This had me thinking a plugged line. Removed and cleaned the bowl and replaced with fresh gas. Gasket seemed ok and it is in snug. I pulled off all fuel lines and blew them out. From tank to pump and pump to carb. They are all clear. Still no luck. I poured a dash of fuel into the carb and it turned over nicely for a brief moment. This is leading me to think the fuel pump has failed and needs replaced. Or a carb issue, but that’s another animal. I pulled the top off the fuel pump and checked the screen and it was clear. There was some fuel in there when I opened it. It is not pulling fuel into the bowl or filling it further. The battery is new and I know I have a spark. Otherwise, maybe an issue from the tank? Is the valve from the tank supposed to be closed snug? I’m thinking about replacing the fuel pump and seeing where that takes me. Some questions
Any fuel pump recommendations other than something from parts geek?
I contacted Charlie NY from ford barn who rebuilds a lot of these and tests them on his own engine. Is he still in business?
Any other ideas short of draining the entire tank?
Rebuild kits are readily available, usually under part identifier 11A-9349 from many of our specialty vendors.
You can also simply replace the whole pump, under Carter M826, BM826, or similar.
Also be aware that any, even invisible, cracks or leaks can prevent the fuel pump from being able to pull/suck the fuel and instead draw air (Imagine trying to drink through a straw that had a hole open to the air). So inspect all your fuel lines.
Lastly, the mechanical fuel pump is actuated by a push rod. These are known to wear down and become less effective at actuating the pump. Some fix it with a glob of weld, but the rod is inexpensive enough to replace:
If you think your fuel pump may have been contaminated with debris, it could prevent the valves from operating correctly. You can open it up and inspect and clean accordingly, or just rebuild it with the aforementioned kit.
Should you replace your pump, be aware that there were changes in the fuel pumps. Some have 1/8-27 threaded inlets and outlets vs the more common 1/2-20. You will need to use the correct plumbing.
1. You asked if the tank valve should be closed snug - answer is no. It should be open CCW all the way. Closed keeps the fuel in the tank from entering the line.
2. You have debris in the bowl that came from somewhere upstream. If its in the line, it came from somewhere (tank). The tank can be a great reservoir of crud.
Drain all but a couple of gallons, then remove the tank from the truck and slosh it around, then dump the remaining gas into a 5 gal bucket. You won't believe what you'll find.
Recently purchased my ford. 50 f1 with flat v8. 6v system. Everything is damn near original. It ran great for the first month. It sat for about 2-3 weeks. When I went to start it up the engine cranks but nothing else. Here’s where I’m at. Couldn’t see any fuel squirting into the carb when I pressed the accelerator. I noticed a lot of sediment in the glass bowl on the fuel pump. Looked to me like flakes of rust probably from the tank. This had me thinking a plugged line. Removed and cleaned the bowl and replaced with fresh gas. Gasket seemed ok and it is in snug. I pulled off all fuel lines and blew them out. From tank to pump and pump to carb. They are all clear. Still no luck. I poured a dash of fuel into the carb and it turned over nicely for a brief moment. This is leading me to think the fuel pump has failed and needs replaced. Or a carb issue, but that’s another animal. I pulled the top off the fuel pump and checked the screen and it was clear. There was some fuel in there when I opened it. It is not pulling fuel into the bowl or filling it further. The battery is new and I know I have a spark. Otherwise, maybe an issue from the tank? Is the valve from the tank supposed to be closed snug? I’m thinking about replacing the fuel pump and seeing where that takes me. Some questions
Any fuel pump recommendations other than something from parts geek?
I contacted Charlie NY from ford barn who rebuilds a lot of these and tests them on his own engine. Is he still in business?
Any other ideas short of draining the entire tank?
Links and part numbers appreciated!
Are you from Pennsylvania ? I have a Gas Tank in excellent condition AND a Fuel Pump as shown in your pictures.Fuel pump has hardly been used. I am in VA, could ship the pump, but tank should probably be picked up ....$$$$$$
Thanks all for the help. I sent my fuel pump out to Charlie Schwendler in New York to be rebuilt. He rebuilt it for me noting a few issues with it. That was my issue! We are up and running. Next step is to pull and drain the fuel tank to clean out any crud that may be lurking in there. I’d like to not pull the tank if I don’t have to. Any suggestions for cleaning a tank without pulling it are appreciated.
Next step is to pull and drain the fuel tank to clean out any crud that may be lurking in there. I’d like to not pull the tank if I don’t have to. Any suggestions for cleaning a tank without pulling it are appreciated.
There is no substitute for removing the tank. Thankfully, the tank behind the seat is extremely easy to do as far as gas tanks go.
I had a localish radiator shop boil my tank out. However, recently, it is more economical to replace the tank with one of the many repops available through many of the traditional specialty vendors.
Pull the tank and get it properly cleaned. The alternative is a frustrating series of stalls and unpredictable no restart situations that will try your soul.
Thanks all for the help. I sent my fuel pump out to Charlie Schwendler in New York to be rebuilt. He rebuilt it for me noting a few issues with it. That was my issue! We are up and running. Next step is to pull and drain the fuel tank to clean out any crud that may be lurking in there. I’d like to not pull the tank if I don’t have to. Any suggestions for cleaning a tank without pulling it are appreciated.
If you've got junk in the tank it will get into your new fuel pump and ruin it in short order. The tank comes out real easy with just a couple bolts at the top, remove the sender wire and disconnect the fuel line underneath. It's really not worth messing with as new ones are only a couple hundred bucks. The peace of mind a new tank will give you, plus knowing you're not breaking down at an unfortunate time or creating a tow bill from bad gas, will be worth every penny. https://www.lmctruck.com/fuel-system...and-components
Well I thought I was out of the woods! After putting the new pump on it pulled fuel right into the bowl and started up great once it got fuel in the lines. I let it idle for a few minutes and called it a success. It’s stored at my parents so I planned to come back later in the week to drive it home to diagnose further in my own garage. Well when I got it going the second time around, it started up and ran well at idle. Once I hit the road after about 5 minutes of driving it bogged down and the engine stopped. Pulled it over thinking it was starved of fuel. But the bowl was still full. Got it back running and it did it again. Popped the hood and the carb looked to be flooded. It was dripping out of the reservoir from the bottom. I’m thinking the fuel flow rate is too high and it’s flooding the carb? It’s the same pump just rebuilt. Had to have it towed home. A big high followed by a big low. Is there a way to adjust flow rate? Should that petcock valve have any hand in this? If I turn it full CCW it drips a lot of fuel so I was planning on replacing it.
Are you from Pennsylvania ? I have a Gas Tank in excellent condition AND a Fuel Pump as shown in your pictures.Fuel pump has hardly been used. I am in VA, could ship the pump, but tank should probably be picked up ....$$$$$$
If the pump was professionally rebuilt, I would expect the pressure to be appropriate - you can verify by testing it against a fuel pressure tool. Most flooding issues are related to the carburetor. Is the float level correct? Has the needle and seat valve been obstructed by debris preventing it from closing? Has the power valve diaphragm developed a leak?
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