My Willys 3A and 3B Community

3A, 3B, DJ Technical Knowledge Base => "Original"-- Technical Questions, Answers, Observations => Topic started by: Spacecrab on September 30, 2025, 03:13:31 PM

Title: Fuel Pump Repair Kits
Post by: Spacecrab on September 30, 2025, 03:13:31 PM

Hi guys, I need some advice if possible.

The diaphram of my original fuel pump has failed and when I look up rebuild kits I just find general kits with no real part numbers.

Many just say "AC Style fuel pump kit", can I trust that they were all so similar that these kits should fit universally?

Any advice welcome!

Title: Re: Fuel Pump Repair Kits
Post by: Rus Curtis on September 30, 2025, 04:38:10 PM

Spacecrab,
This would be a great topic for Scoutpilot to answer.  I think he's in the hospital for the next few days.  I had my fuel pump rebuilt with an ethanol-safe diaphragm many years ago by Then And Now. 

I've read multiple posts on g503 that NOS - in this case - isn't the best.

Concerning Vendors today, I've purchased rubber parts that will harden and crack in a very short time.  So flat out trusting a well known vendor is not a guaranteed success.

Title: Re: Fuel Pump Repair Kits
Post by: tow hook on October 01, 2025, 10:30:26 AM

Quote from: Spacecrab on September 30, 2025, 03:13:31 PM

Hi guys, I need some advice if possible.

The diaphram of my original fuel pump has failed and when I look up rebuild kits I just find general kits with no real part numbers.

Many just say "AC Style fuel pump kit", can I trust that they were all so similar that these kits should fit universally?

Any advice welcome!

 i had Rick Pacholski Aka old jeep carbs do mine www.oldjeepcarbs.com. i would say he has the parts you need with answers.

 brian

Title: Re: Fuel Pump Repair Kits
Post by: Spacecrab on October 01, 2025, 02:57:34 PM

Thank you guys I really appreciate it.

When I restored the '3b I think I bought the pump, it worked and I never really questioned it.

It probably didn't have Ethnol resistent rubbers & seals, I'm suprised it's lasted for the years it has.

I will check out those sellers.

Title: Re: Fuel Pump Repair Kits
Post by: SteveKfl on October 02, 2025, 06:13:46 AM

Tow hook,  I tried the link www.oldjeepcarbs.com and here's what I got instead... ??? ... Has anyone else tried it with same or different results?
Fastly error: unknown domain: www.oldjeepcarbs.com. Please check that this domain has been added to a service.

Details: cache-mia-kmia1760062-MIA (151.101.1.91)

Title: Re: Fuel Pump Repair Kits
Post by: Rus Curtis on October 02, 2025, 09:15:15 AM

Scoutpilots website is this URL

https://oldjeepcarbs.freeforums.net/

Title: Re: Fuel Pump Repair Kits
Post by: SteveKfl on October 02, 2025, 09:23:29 AM

Thanks RUS.  Different name of rep used, but with same site name threw me.  Since you mention Scott Pilot earlier being in the hospital, I hope he is doing well now.

Title: Re: Fuel Pump Repair Kits
Post by: Rus Curtis on October 02, 2025, 09:56:27 AM

I learned going to his forum.  Down at the bottom is a feature called "Shoutbox".

Checking just now, he posts that there's a 50/50 chance he goes home today.  Apparently, the coffee there is an acquired taste.

Title: Re: Fuel Pump Repair Kits
Post by: scoutpilot on October 04, 2025, 06:05:06 AM

I escaped yesterday afternoon. Recuperating at home. Now then. single or dual action pump?

Title: Re: Fuel Pump Repair Kits
Post by: Rus Curtis on October 04, 2025, 08:32:55 AM

Quote from: scoutpilot on October 04, 2025, 06:05:06 AM

I escaped yesterday afternoon. Recuperating at home....

YES!  Good news!  Hope your recovery continues and know the coffee is better at home!!