danliveshere
Well-known member
My Late father-in-law was a soldier in North Africa during WW2. They had to come up with all kinds of tricks to overcome vapour lock in the V8 trucks in the desert. The problem has been around since way back when!!!
Problems Fuel pump in high temperature.
- Thread starter Harylufa
- Start date
FlatheadTed
Well-known member
The Model A was a reliable machine were the v8 has a reputation of not being ,The A had gravity feed ,take a 34 Chev the pump is low on the block with a 1/2 full tank you will likely get fuel flow down to the pump .The pump is one of the things that needs to be right and you shouldn't need a electric pump ,if fitting one solves Vapor lock then its got to be the fault of the Mechanical pump thats causing the vapor lock. ,We rebuilt a pump and I showed the owner how good it pumped with a clear tube on the input side ,With my palm on the rod cup ,and two strokes on the pump arm it dragged the gas up 3 feet .so 6 strokes should drag it from the tank ,the gas sits in the loop of the fuel line between tank and pump .One we rebuilt sat for 2 weeks then started with just a few winds on the starter , GM said the flexible line on the input side of the pump can give trouble because of the Gas now .I have had trouble with these for years specially new old stock even on the old gas ..You are better to make up a new one using high grade gas resistant rubber tube ,There are proper processes to rebuild a pump given by AC. I don't think the fact that the pumps sitting high on our ford s can be a problem if its set up properly .ILL try and post more on setting them up it later
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Harylufa
Senior Member
Hi!
I have two picture, which one is original fuel pump for my car?
I have been investigating and It is confuse because both of them "go" to my car.
Now I have 59A-9350 without bowl, perhaps It came originally with my car???
Here we use "Nafta" no ethanol.
Thanks
Harylufa
I have two picture, which one is original fuel pump for my car?
I have been investigating and It is confuse because both of them "go" to my car.
Now I have 59A-9350 without bowl, perhaps It came originally with my car???
Here we use "Nafta" no ethanol.
Thanks
Harylufa
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Old Henry
Well-known member
Part number 59A-9350 is the part number for the pump on the right that is listed in the parts book for years 47-48 (and what I have on my '47). The other pump is part number 11A-9350 which is for a V8 engine with aluminum valve chamber covers through the '46 model year. This is all according to the Ford parts book. So, the pump on the left most likely came on your car.
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Harylufa
Senior Member
Thank you very much Old Henry!
Here in my country I can get the 59A-9350. The other one I do not.
Harylufa
Old Henry
Well-known member
The pump you have on your car is neither of the ones in your pictures. I don't know what it is. Either of the ones in your pictures will work on you car. The one on the left is the one that came on your car. If you want a new one of those it is here: http://macsautoparts.com/early-v8-f...-60-hp-11a-9350/camid/F30/cp/JS0R3CHL1073530/ If not and you can get the one on the right, the 59A-9350 will work just as well and has the settling bowl on it that eliminates the need for a fuel filter that can plug up and stop the flow of fuel.
Here is the 59A-9350 that was stock for my '47 installed as from the factory.
Harylufa
Senior Member
The pump you have on your car is neither of the ones in your pictures. I don't know what it is. Either of the ones in your pictures will work on you car. The one on the left is the one that came on your car. If you want a new one of those it is here: http://macsautoparts.com/early-v8-f...-60-hp-11a-9350/camid/F30/cp/JS0R3CHL1073530/ If not and you can get the one on the right, the 59A-9350 will work just as well and has the settling bowl on it that eliminates the need for a fuel filter that can plug up and stop the flow of fuel.
Here is the 59A-9350 that was stock for my '47 installed as from the factory.
Dear Old Henry!
Thank for this picture! I must immediately correct the circuit to the pump. I see in many cars also in yours a connection of cooper pipe between carb and pump. I do not remember which cooper pipe size is. Is this system better than rubber hose to avoid hose dilate in high temperature?
Harylufa.
Old Henry
Well-known member
I don't think copper is used because the fuel flows through it any better. You can get plenty of fuel through a rubber hose. But, the copper is more durable meaning that it lasts much longer and is safer because it's less likely to spring a leak and cause a fire.
The copper tubing is 1/4 inch outside diameter copper tubing connected with ferrules and fittings to the pump and carburetor as pictured here: http://macsautoparts.com/early-v8-f...buretors-a9243b/camid/F30/cp/JS0R3CHL1140503/
Tubing already bent to fit perfectly between the stock fuel pump and the Holley 94/Ford 59 carburetor which you have is available here: http://macsautoparts.com/early-v8-f...ord-v8-81a-9369/camid/F30/cp/JS0R3CHL1140683/
Harylufa
Senior Member
Old Henry
Well-known member
Any liquid on the fuel pump, especially fuel colored (green) liquid is most likely fuel leaking out of the fuel pump. I've had that happen and all I had to do was tighten down the screws on the pump and it quit leaking. Check all of those screws to make sure they are tight or tighten them down and check again for leaks. You may not need to replace the fuel pump. But, then, again, you might.
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Old Henry
Well-known member
Hary, It sounds like you are thinking something is wrong with your fuel pump and that you need to replace it, especially because it is not a stock pump for your car. If you want to replace it with something more authentic, fine. But if you are considering replacing it because you think it's not working right you might as well check it before you do that. It may be working just fine.
Two tests for your fuel pump:
1. Check for gas flow. To do this you disconnect the fuel line from the carburetor and hold it over a container while you crank the engine without the ignition turned on. You should see spurts of gas coming out of the end of the line. If so, you've got flow.
2. Check the pressure. Now connect that loose end of the fuel line to a pressure gauge. I use the same one shown by Flathead Ted in #23. It is a combination vacuum and pressure gauge. Once the gauge is connected to the end of the fuel line crank the engine and watch the pressure. The pressure should be between 1.5 and 3.5 lbs. If it is, and you had flow, your fuel pump is working fine and doesn't need replaced.
Two tests for your fuel pump:
1. Check for gas flow. To do this you disconnect the fuel line from the carburetor and hold it over a container while you crank the engine without the ignition turned on. You should see spurts of gas coming out of the end of the line. If so, you've got flow.
2. Check the pressure. Now connect that loose end of the fuel line to a pressure gauge. I use the same one shown by Flathead Ted in #23. It is a combination vacuum and pressure gauge. Once the gauge is connected to the end of the fuel line crank the engine and watch the pressure. The pressure should be between 1.5 and 3.5 lbs. If it is, and you had flow, your fuel pump is working fine and doesn't need replaced.
Old Henry
Well-known member
That does not seem normal. In fact, it seems backwards. When the engine is running the fuel filter should be full of fuel. When the engine stops it would be expected that the fuel might drain out of the filter back down the gas line. The way yours is, I suspect that you may have something plugging up the fuel line from the gas tank restricting the flow of gas when the engine is running. Then, when the engine stops, the gas flows out of the pump to the filter and fills it up.
If you don't get gas flowing out of the end of the fuel line that you disconnected from the carburetor in the flow test I just described, that does not necessarily mean that the fuel pump is defective, especially if the pump creates sufficient pressure. A problem with flow in that test is more likely something pluging the fuel line. That could be a plugged fuel filter or, as was my chronic problem until I replaced my gas tank, crud in the gas tank is plugging up the fuel line where the gas leaves the tank. All of that should be checked before concluding that your pump is bad.
ken ct
BANNED
Most alum. intake manifolds were phased out by 38 or so and were mostly cast iron by then. I have never seen an alum one on a car after 40-41. OME.Most of the NEW pumps are comming in from China,you dont want one of them. The all steel on the left is the correct pump.Your better off buying a rebuilt original. The steel copper coated line is correct one and pre-bent.Only my opinion Harylufa. ken ct usa.I suspect you may have a bad valve in the FP.causing your not normal gas in the glass bowl.
FlatheadTed
Well-known member
Its advisable to Hary to drop your pump down to stoke hight like Old Henry
FlatheadTed
Well-known member
Here is mine on my 34 4 door Like Harys one, its more suitable for early cars ,.Like Columbus I use the primer leaver to pump up the gas after its been sitting , the reason is these pumps do not have replaceable valve seats ,so its a faulty pump , you get fuel drain back .To have this or use a electric pump I don't think this is what Henry Ford had in mind .The one 59A Hary is looking at you can change the valves so its a better desgn ,
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Harylufa
Senior Member
Dear Friends!!!
First of all, thank you very much for such interested posting, is helping me a lot, It is a pleasure reading. I think am learning how to face any problem.
Today a long day, I have been discovering some hidden problem I attach some picture.
1-My radiator was totally cleaned It was almost blocked. I have electric fan.
2-I have a little filter bowl that was full of oxide trash.
3-I changed the circuit, now hoses are straighter (with less curves, less resistant).
I need to know if this can change something, before changing the pump. Remember that I begun a post talking about temperature in my car, now with cleaned radiator, I hope be done.
I must check coil just to know if it works fine. I read Old Henry post how to do it.
DEALING A PROBLEM AT A TIME!!!
I will came back with news once I had driven my car for a while.
Harylufa
First of all, thank you very much for such interested posting, is helping me a lot, It is a pleasure reading. I think am learning how to face any problem.
Today a long day, I have been discovering some hidden problem I attach some picture.
1-My radiator was totally cleaned It was almost blocked. I have electric fan.
2-I have a little filter bowl that was full of oxide trash.
3-I changed the circuit, now hoses are straighter (with less curves, less resistant).
I need to know if this can change something, before changing the pump. Remember that I begun a post talking about temperature in my car, now with cleaned radiator, I hope be done.
I must check coil just to know if it works fine. I read Old Henry post how to do it.
DEALING A PROBLEM AT A TIME!!!
I will came back with news once I had driven my car for a while.
Harylufa
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danliveshere
Well-known member
Hary, no wonder you were having trouble with all that muck in your filter, it's lucky you could even start it. Just goes to show how good your fuel pump is !!! You may want to drain your fuel tank, remove the plug at the bottom and flush it with kerosene till no muck runs out and then let it drain properly.. OMO. Either that or replace the filter more often.
Old Henry
Well-known member
Here's how my fuel filters looked every few weeks until I finally bought a new gas tank. I carried extras and was changing them all the time on the side of the road when the engine would quit. Like danliveshere said, you might be able to clean it out but mine was too far gone. It had pinhole rust-throughs all over the top such that I couldn't fill it with gas or it would leak. Ought to check that out.
Harylufa
Senior Member
Here's how my fuel filters looked every few weeks until I finally bought a new gas tank. I carried extras and was changing them all the time on the side of the road when the engine would quit. Like danliveshere said, you might be able to clean it out but mine was too far gone. It had pinhole rust-throughs all over the top such that I couldn't fill it with gas or it would leak. Ought to check that out.
Old Henry and Dansliveshere!
I have a problem with the tank plug is blocked totally I could not unscrew it. This year I sent it to clean it but they did not unscrew the plug they "forgotten"
I need to see how It will work now first.
Thank you.
Harylufa