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Posted By: Gary P. '46 Chevy Truck wont run - Fri Jun 19 2020 06:02 PM
It has '58 235 cu in 6 cylinder with a 6 volt ignition system in it. ( the casting on the block is 58 or 53. I cant tell)
I was going to show last week when it just died while I going down the road.
The fuel pump is bad. Is there a difference in pumps in these two years?
Any help would be greatly appreciated.
Posted By: Hotrod Lincoln Re: '46 Chevy Truck wont run - Fri Jun 19 2020 06:13 PM
Be sure to test the pump before changing it. There are several reasons a fuel pump quits working, and simply swapping to a "new" pump won't solve problems like a clogged fuel line, a restricted gas tank vent, debris in the tank, and a lot of other problems. Plus, you might have to try several new overseas-manufactured pumps before you find a good one. See if the engine will fire up and run for a while by filling the carburetor float chamber through the vent pipe at the top of the air horn. With the float chamber full, the engine will idle for nearly a minute- - - -long enough to check the pump for pressure, vacuum, and volume.
Jerry
Posted By: bartamos Re: '46 Chevy Truck wont run - Fri Jun 19 2020 07:21 PM
1. A 58 is a 12V motor. I assume you have worked that out.

2. I assume you know what you are saying is true, but how do you know the fuel pump is bad?

3. Your only question is: "are 53 and 58 the same pump."
Do you have the dual action vacuum for wipers or single action for electric wipers?

4. Websites list different part numbers for the pumps in 53 and 58. However I believe they are the same physically. They do have have different flows. Single stage: 53 is 20 GPM and 5 psi max. 58 is 25 GPM and 4 psi max. Depending on carb, your choice. I would find out what motor I had if I were you. With tolerances and your hybrid system, they can be called the same pump.
1953 Carter M2118
1958 Carter M2999

In the dual stage pump versions for 53 and 58, the PSI's cross over each other. So more evidence of either pump for either motor.
Posted By: Gary P. Re: '46 Chevy Truck wont run - Fri Jun 19 2020 11:20 PM
Originally Posted by bartamos
1. A 58 is a 12V motor. I assume you have worked that out.

2. I assume you know what you are saying is true, but how do you know the fuel pump is bad?

3. Your only question is: "are 53 and 58 the same pump."
Do you have the dual action vacuum for wipers or single action for electric wipers?

4. Websites list different part numbers for the pumps in 53 and 58. However I believe they are the same physically. They do have have different flows. Single stage: 53 is 20 GPM and 5 psi max. 58 is 25 GPM and 4 psi max. Depending on carb, your choice. I would find out what motor I had if I were you. With tolerances and your hybrid system, they can be called the same pump.
1953 Carter M2118
1958 Carter M2999
the dual stage pump versions for 53 and 58, the PSI's cross over each other. So more evidence of either pump for either motor.

1. I did work that out. it's a'53 (6 volt)
2. It was not the pump after all
3. My current pump has no vacuum line

I started to remove the fuel lines and got NO fuel. The in-line fuel filter was completely clogged with a white gooey substance. I'm sure that it is the Ethanol in the gas. I thought that I had added enough Sta Bil to the tank last year, but I guess not. I am worried about there being more of this stuff in the tank. Tomorrow I'm going to drain out a few gallons through a paint filter and see if I get anything. I had to replace a fuel lineon my boat a couple of weeks ago due to Ethanol gas. The interior lining on the fuel line deteriorated and collapsed, blocking all fuel flow

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Posted By: Gary P. Re: '46 Chevy Truck wont run - Fri Jun 19 2020 11:23 PM
Originally Posted by bartamos
1. A 58 is a 12V motor. I assume you have worked that out.

2. I assume you know what you are saying is true, but how do you know the fuel pump is bad?

3. Your only question is: "are 53 and 58 the same pump."
Do you have the dual action vacuum for wipers or single action for electric wipers?

4. Websites list different part numbers for the pumps in 53 and 58. However I believe they are the same physically. They do have have different flows. Single stage: 53 is 20 GPM and 5 psi max. 58 is 25 GPM and 4 psi max. Depending on carb, your choice. I would find out what motor I had if I were you. With tolerances and your hybrid system, they can be called the same pump.
1953 Carter M2118
1958 Carter M2999

In the dual stage pump versions for 53 and 58, the PSI's cross over each other. So more evidence of either pump for either motor.


Thanks for the info. Look at my other reply. I's not the pump
Posted By: bartamos Re: '46 Chevy Truck wont run - Fri Jun 19 2020 11:49 PM
The fuel hose sold now, including marine, is safe for E85.
Don't take this the wrong way but you are guessing too much with your issues. I.E. Pump and what is cause "white stuff". You can't say "it's the pump" without testing.
Let gas drain into a clear jar a little bit before paint filtering, so you can see what is at the bottom of tank.


Very glad you caught it, good work.
Posted By: EdPruss Re: '46 Chevy Truck wont run - Sat Jun 20 2020 12:01 AM
Set up an alternate fuel supply with known clean, modern fuel to do a test run, that is assuming the carb is clean.

Ed
Posted By: bartamos Re: '46 Chevy Truck wont run - Sat Jun 20 2020 12:17 AM
Do you have an aftermarket aluminum fuel tank? or a steel tank. If you get white stuff in tank drain test, it's not the hoses.
Posted By: Gary P. Re: '46 Chevy Truck wont run - Sat Jun 20 2020 01:25 AM
Originally Posted by bartamos
The fuel hose sold now, including marine, is safe for E85.
Don't take this the wrong way but you are guessing too much with your issues. I.E. Pump and what is cause "white stuff". You can't say "it's the pump" without testing.
Let gas drain into a clear jar a little bit before paint filtering, so you can see what is at the bottom of tank.


Very glad you caught it, good work.

The inline fuel filter is between the original steel tank and the fuel pump. The truck runs really well right now. Whatever this white gel is is in the tank.

I only mentioned the boat I only mentioned the boat because I can't stand this Ethanol fuel. The fuel line on the boat was 18 years old and not the new generation of fuel lines. There are many problems caused by this fuel in fuel systems that are open to the atmosphere.

I like the suggestion of putting the gas in a clear container and letting it settle for a while before straining it.
Posted By: Phak1 Re: '46 Chevy Truck wont run - Sat Jun 20 2020 12:31 PM
The white gel is most likely ethanol. In my experience, treating gas with Stabol before stowing equipment (or in your case a truck), is not an effective way to insure it won’t coagulate. Ethanol can gel in as little as six weeks. That means that you have to go thru a full tank in less that six weeks to insure you won’t have an issue. Fortunately, in my area, I can buy non-ethanol gas at about sixty cents more a gallon. I made the switch to non-ethanol treated gas several years ago when I was cleaning out several carburetors a year, in my 4-wheeler, snow blower and yard equipment. I did use Stabol when stowing my equipment over the winter/summer. Since I made the switch, I buy nothing but ethanol free gas and I still treat it with Stabol 360 prior to filling the can. That way, I don’t have to keep track of which equipment was treated. Since the switch, I virtually eliminated cleaning carburetors. I still run E-10 in my daily driver but I go thru more than tank of gas every two weeks.

You gas tank more than likely contains more of that gel and will need to be cleaned out in addition to the lines, petcock etc.
Posted By: Gary P. Re: '46 Chevy Truck wont run - Sat Jun 20 2020 11:57 PM
I appreciate all the feedbacks on this. I think I know what is going on now. I've been looking all over the Internet about ethanol gelling. While there is something in my tank, I don't think it is the gel from the ethanol. This substance is pure white. I will try and attach a picture that I took. This truck was my late father's project and he must be saying hello to me his Father's Day weekend. Towards the end there he made some, very let's say iffy, fixes. I think that what in the gas tank is actually some kind of caulk Maybe to seal the fuel level mechanism. Who knows. The bottom line is that there is something in the tank and I don't know what it is. There's also something that I do know what it is. Rust and lots of it. I'm sure that I have jarred some of it loose but I'm going to pull the tank and have it cleaned and coated. A friend of mine also has the same identical tank that he would give me, if I need it.
It'll be a few weeks but I will keep you guys posted.

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Posted By: Justhorsenround Re: '46 Chevy Truck wont run - Sun Jun 21 2020 12:50 AM
I believe new tanks are available and not overly expensive.🛠
Posted By: mac67 Re: '46 Chevy Truck wont run - Thu Jul 02 2020 07:46 PM
Just my two cents...Phak1 has good info about fuel. I live in Iowa so ethanol is pushed everywhere. Most station have no alcohol availabe, it's more expensive but I stay away from E10 if at all possible. It is a solvent and corrosive over time. Maybe in New vehicles it's ok but I'm something pre 80's, No thanks. In my experience it is the death of small engines. Use major brand straight gas in the mower and toys. Engineered Tru-fuel in 2 stroke trimmer n such. I haven't had any fuel related issues since avoiding the ethanol in everything.
When the 71 was delivered it only had a few gallons in it and ran a little choppy. No idea how old or what was in the tank. Drained everything, new filter, techtron and filled with the good stuff and ran it. Quite a difference.
Not that it helps but alcohol has lower BTUs and you get a tad better mileage going straight up.
If you want alcohol, I do recommend three fingers sameway..or with just two cubes!
Posted By: EdPruss Re: '46 Chevy Truck wont run - Fri Jul 03 2020 12:49 PM
Set up a remote small tank with direct feed to carb. to eliminate contaminated fuel problem.

Ed
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