New Yorker 47 Fuel pump

[Carl-Gustav]

Hello everyone!

 

Ok, maybe it's a dumb question but I'm sure some of you will be able to give me an answer ?

How do I figure out witch fuel pump I have on my New Yorker 47? ... I've been looking for rebuilding kits but I end up having different choices depending on brand of pump ? 

It all started after winter when I tryed to crank the engine but it didn't want to start. So I started with a check of the lines, carb and so on... The carb seemed faulty and leeky so I refurbished it. It still leeks(drips) from one place but not much. Then it seemed like the fuel didn't go all the way so I figured the pump didn't have the strength to pump and push up the fuel... I installed an electric one as a primer and a check valve - problem solved... I thought ? I went on a longer ride the other day and after a while the engine started coughing but if I used the electrical pump for a couple of seconds it worked fine again. I found that when speeding a little it had trouble getting enough fuel so I figure the mechanical pump is tired. 
Do you think my conclusion is correct? 

Best regards
Carl
??

[chris 48 P15]

then and now automotive website has a huge selection of pump rebuild kits

i removed my fuel pump and was able to match up the main gasket with pictures and rest of written description.

on my pump there is a flaw that is corrected in the new kit.

[Bingster]

Then & Now also has great videos on how to rebuild the pumps. He tells you where to find the serial number on your pump.

[Dodgeb4ya]

If your pump is old I would rebuild it or have it rebuilt.

There should be three stand off studs to support the heat shield and a little air dome to quiet the pump pulsations.

Then and now has a video of rebuilding this same pump...they will do a great job. Or they will sell you a kit.

There are some of these pumps online NOS or they will rebuild your core but very costly. A NOS pump will probably fail because of ethanol fuel. Get one or yours rebuilt.

You should also replace the flex hose at the pump.

This reminds me I need to order a couple fuel pump kits for two of my straight eight cars.

I rebuild my own.

This is what your standard 1946-50 Chrysler 8 fuel pump (AC590) should look like...all 1939-50 Chrysler 323 eights same.

Edited May 18, 2023 by Dodgeb4ya
AC590 pump #

[joecoozie]

2 hours ago, Carl-Gustav said:

Hello everyone!

 

Ok, maybe it's a dumb question but I'm sure some of you will be able to give me an answer ?

How do I figure out witch fuel pump I have on my New Yorker 47? ... I've been looking for rebuilding kits but I end up having different choices depending on brand of pump ? 

It all started after winter when I tryed to crank the engine but it didn't want to start. So I started with a check of the lines, carb and so on... The carb seemed faulty and leeky so I refurbished it. It still leeks(drips) from one place but not much. Then it seemed like the fuel didn't go all the way so I figured the pump didn't have the strength to pump and push up the fuel... I installed an electric one as a primer and a check valve - problem solved... I thought ? I went on a longer ride the other day and after a while the engine started coughing but if I used the electrical pump for a couple of seconds it worked fine again. I found that when speeding a little it had trouble getting enough fuel so I figure the mechanical pump is tired. 
Do you think my conclusion is correct? 

Best regards
Carl
??

Could be the pump - won't hurt to rebuld it

Could be vapor lock from the fuel boiling when the engine gets hot - do you have the heat shield in place?

Could be an obstruction/dirt in the line from the tank or in the tank itself

[Bingster]

I rebuilt mine and it was very straightforward. Didn't seem to be too much room for screwing it up.

[Carl-Gustav]

16 hours ago, joecoozie said:

Could be the pump - won't hurt to rebuld it

Could be vapor lock from the fuel boiling when the engine gets hot - do you have the heat shield in place?

Could be an obstruction/dirt in the line from the tank or in the tank itself

Hmm, there is no shield... I've been thinking of fixing one ?

[Carl-Gustav]

19 hours ago, Dodgeb4ya said:

If your pump is old I would rebuild it or have it rebuilt.

There should be three stand off studs to support the heat shield and a little air dome to quiet the pump pulsations.

Then and now has a video of rebuilding this same pump...they will do a great job. Or they will sell you a kit.

There are some of these pumps online NOS or they will rebuild your core but very costly. A NOS pump will probably fail because of ethanol fuel. Get one or yours rebuilt.

You should also replace the flex hose at the pump.

This reminds me I need to order a couple fuel pump kits for two of my straight eight cars.

I rebuild my own.

This is what your standard 1946-50 Chrysler 8 fuel pump should look like...all 1939-50 Chrysler 323 eights same.

It looks like mine...but I have the airdome on the other side ? maybe it doesn't matter? ... Do you know what kit I should buy to refurbish mine? ?

[rcl700]

21 hours ago, Bingster said:

Then & Now also has great videos on how to rebuild the pumps. He tells you where to find the serial number on your pump.

Can you possibly link to the videos. Iv been on the website but didn't see a video covering fuel pump identifying.  

 

I  have a 48' that will probably require a fuel pump rebuild. 

[Carl-Gustav]

The pump and surrounding is wet couse I cleaned it a little ? it's not leaking!

 

As the coughing appears at a certain speed (44 mph)  I'm quite sure it's not vapor lock... 

[Bingster]

This should get you to one of his videos and the click on his icon and there's a list of videos for various cars and pumps.

 

[Dodgeb4ya]

Your air dome is on the correct side to the rear of the engine but clocked at

7 o'clock not 9 o'clock as originally designed...easy to fix that.

Some pics of the factory eight heat shield...

[Carl-Gustav]

19 hours ago, Dodgeb4ya said:

Your air dome is on the correct side to the rear of the engine but clocked at

7 o'clock not 9 o'clock as originally designed...easy to fix that.

Some pics of the factory eight heat shield...

Great pictures! Thanks ?

Oh, I get it. They have screwed it on wrong so it should be turned so the dome is 9 o'clock, check! About the shield...that's more difficult but I'll see what I can do ?

Need to find the number stamped on it so I can find the right kit... I believe it should read 590?! ?

[Dodgeb4ya]

It's a AC 590 pump.

"Then and Now" has a video on your 590 pump on how they rebuild it.

[Carl-Gustav]

I've looked at their website and found the kit but I need to check with them about shipping... Can't find how to contact them ?? does anyone know?

[Dodgeb4ya]

I just ordered my 1948 Chrysler 8  kit last Wednesday...got it last Saturday.

I called them to order it. I had to call twice till someone answered the phone.

Fast service.

[Carl-Gustav]

I think I found them on FB ?

Edited May 23, 2023 by Carl-Gustav

[Woodie]

Thanks for all the advice on this thread I started.  I ended up purchasing an original factory pump (date stamped on casing 1946) and it was rebuilt several years ago as I can see some wear on lever tip. It is working fine and I only have  used non-ethanol gas so what do you think about the life expectancy of the old fashion diaphragm?  My previous 1948 Chrysler I drove for 20 years (pre-ethanol gas era) And never had a pump problem. Thanks

[harmony]

Back in 2019 the fuel pump on my '48 Windsor started to leak.  I took it apart and sure enough the rubber diaphragm had disintegrated due to ethanol gas.  I sent it to Then & Now to be rebuilt.  Once they got my fuel pump they called me on the phone to say that I had an early style, but they could still replace the diaphragm and it would probably be ok.  I said go for it.  When I got the fuel pump back it only lasted maybe a hundred miles and it was leaking again.  I sent it back to them and this time they replaced the bottom half with an updated version.  It's been a few years and I forget the details of what they did, but it was now updated and improved.  They promptly sent it back to me. 

They are almost as far east on the continent and I am as far west as you can go on the far side of the continent in Canada.  They apologized for not upgrading the first time around and said that the parts for the upgrade ( basically the bottom assembly if I remember correctly) was worth around $100 plus CAD.  Not to mention the labour.  They didn't charge me anything at all (parts, labour, shipping)second time around.  Great customer service and judging by the time frame, once they got my fuel pump back the second time, to the time it arrived back to me in the mail, I would say it was a priority on their work bench.  A few weeks later I got a follow up email from them asking if my fuel pump was working properly.   Very pleased with their professionalism.