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-   -   Coolant question (https://www.fordbarn.com/forum/showthread.php?t=350602)

Mshaynes21 07-08-2025 08:29 PM

Coolant question
 

I noticed some coolant under my 30 A Roadster. I thought I might need to add some coolant in but as I was pouring it in it was coming out the overflow tube onto the ground. Does this mean the radiator was already too full? It was really hot today outside but the car hasn’t been running.
Thanks for any info!

JayJay 07-08-2025 08:55 PM

Re: Coolant question
 

Quote:

Originally Posted by Mshaynes21 (Post 2399502)
I noticed some coolant under my 30 A Roadster. I thought I might need to add some coolant in but as I was pouring it in it was coming out the overflow tube onto the ground. Does this mean the radiator was already too full? It was really hot today outside but the car hasn’t been running.
Thanks for any info!

Maybe. On a Model A it’s pretty easy to pour coolant into the top of the copper overflow tube when you fill at the neck. Suggest that you carefully fill the radiator until it is just above the splash apron visible through the neck, close it up and drive it. The coolant will seek its own desired level and stabilize. After that, look for leaks on the ground.

nkaminar 07-09-2025 03:22 AM

Re: Coolant question
 

When I fill my radiator after draining it for some work on the engine, I use a funnel. That eliminates the coolant from hitting the overflow tube and keeps me from spilling it over my hood and radiator.

Bob Bidonde 07-09-2025 06:10 AM

Re: Coolant question
 

1 Attachment(s)
This slide may help you.

brokenspoke 07-09-2025 06:55 AM

Re: Coolant question
 

Put a roofing nail in the overflow tube

nkaminar 07-09-2025 07:28 AM

Re: Coolant question
 

There was a service notice to bend the overflow pipe towards the front of the radiator to prevent excessive coolant loss. Just be careful to bend it gently and in a generous radius. The service notice is on page 450 of the Service Bulletins.

Big hammer 07-09-2025 08:03 AM

Re: Coolant question
 

WOW time flies , 55 years ago I chased my tail around looking for a reason why my A was over heating in the summer. Removed radiator and had it cleaned and repaired, removed and rebuilt the water pump, cleaned the block with a long cable poking around the rear cylinders, etc. I finally figured out letting it find its happy place just at the baffle, walla no more over heating ( overflowing) ! Wished we had the internet, I could have been having fun getting into trouble :-)

chap52 07-09-2025 08:48 AM

Re: Coolant question
 

What Big Hammer said. Chap


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