Tweet
I need help tracing the cause of my 1930 A coupe has started leaking coolant from the overflow tube on cold start. I noticed it having a tendency to run hot this summer just driving around the neighborhood . How do I determine the cause ? Tks for any help Dallas Johnson [email protected]
-
-
Dallas is it? WELCOME to the VFF!!
First thing I would check is where the over flow pipe sets in the radiator neck. In the Service Bulletins, Page 450, Ford stated that the tube must be moved to the farthest part of the neck, and as high into the neck as possible.
Second, are you overfilling the radiator? The radiator coolant will settle at it's own level, which normally isn't to the lower edge of the filler neck, but more often than not, about an inch below there.
Has your car been modified with a thermostat or filter in the upper hose? These things can cause an overheating problem as well as the radiator tubes becoming clogged with rust chips from the engine. I personally have removed the radiator on my '28 Tudor and laid it flat on the front with the cap on and filled it with vinegar and sloshed that around for a few days, and after draining the vinegar through cheese cloth had chunks of rust even after force flushing the radiator upside down. Even though the original radiators had a lot of tubes and a large cooling area, if it isn't clean, it won't cool.
There are several other things that can cause over heating, like timing, head gasket, engine cracks, but this is the basic spots to look for first. I believe in K.I.S.S., start simple. There is plenty of time to get complicated.
J.C.
You wana look waaay far up da road and plan yer route because the brakes are far more of a suggestion than a command! -
Sounds like your radiator is plugging off tubes go to the technical section here and read what others have done sounds like a good block cleaning and radiator cleaning are probably needed. Also search the tom W, method of back flushing as well study these and get back to us so we can help you better. Also welcome to the vff there is a lot of info here to digest and some real experts here as well. So first do a little research and if you do not find answers ask we will always help. Plus what Wiz said.Comment
-
Here's a link to the thread about cooling system cleaning. I show 3 pictures of how I cleaned mine, and go a lot of rust out. I fill to just below the baffle plate and always use antifreeze.
https://www.vintagefordforum.com/for...em-informationComment
-
Sounds to me on start up you don't have a baffle plate. Looking down in your filler neck you should be able to see the overflow pipe sticking up close to the top, you should not be able to see the tubes of your core.Comment
-
As Tom mentioned keep your coolant level at the baffle height. Overfilling will cause it to go out the over flow pipe.
Why do you think the car is running hot? What are your indicators other than the overflow issue?Comment
-
I do not however remember any overflow. The prev owner is a neighbor and states no prev issues with over heating unless driving a lot slowly and siting at idle for long periods in 90 plus weather.Comment
-
Well here are the main causes for overheating
timing is off
head gasket issue
head needs re torquing
partially restricted radiator
Since your saying it runs hot at idle i will venture out on a limb and say you need a new radiator. Running your motor hotter than it should causes a slow death
there are tests available for ck ing for a combustion gas leak into the cooling system. Maybe get an infrared thermometer and check for cold spots in the radiator core or use your handComment
-
Yes you will need to remove the radiator to have a baffle installed as the top tank will need to be removed, unsoldered, so that the baffle can be installed. At the same time the radiator shop can rod out your core and let you know what condition as a whole your radiator. I see you are in MO, and it probably gets quite warm there in the summer? Look for a shop that has a lot of experience repairing Model A radiators. If you find a good shop to do this work, I'd recommend taking along your radiator shell to be sure it fits before you leave the shop when it is finished.Comment
-
Drop a loose fitting Roofing nail in the top of the overflow tube, to prevent coolant loss from "splash" over.
Look in & REV it up, you'll be AMAZED at how the water CHURNS around & dumps some into the overflow!
Dad OldtimefixLast edited by BILL WILLIAMSON; 10-29-2017, 07:39 AM.
-
by CarbonheadThis is a newly purchased Model A pickup. Not sure what’s original, what’s not. Not sure what’s been done to motor, seller said he last drove the truck 19 years ago after complete rebuild. It was kept in a heated, dry garage. Appearance-wise it’s in excellent condition. Motor, etc.also very clean.
When cold it starts immediately. The problem is when driven about fifteen miles,...07-16-2018, 09:44 AM -
My tube sticks up nearly flush with the top of the radiator neck. I am going to try to cut it off with a dremel at the top of the baffle. Sound about right?05-04-2020, 09:09 AM -
Along the lines of Mitch's post, I don't know the answer to this, but so many of us have had problems with cooling and the blocked radiators, I wonder if there could be some good calibrated check of the rate of flow through a radiator. For instance, keep pouring water into the radiator so that it is full (flowing out the overflow tube and top of the radiator won't matter) and then disconnect the...08-13-2017, 09:03 AM -
by Bill GI recently purchased a very nice Brassworks radiator. My old radiator had no baffle in the filler neck, so I could plainly see where I wanted to fill the level with coolant. I would fill it to just a little over the tops of the tubes because if I filled it more than that, it would all blow out anyway. That old radiator was falling apart and took many fills to keep it in water.
This is...08-06-2019, 04:02 PM -
by Tom FWhen I got on this site the other day there was a thread about not being able to see how much water you have in the radiator, and now I can't find it. I have that problem and without having to buy that $50.00 kit can I just top the radiator with some antifreeze above the baffle and then run it for a while and then check to see if its going to freeze this winter. Thanks. Tom..... PS Nice site...10-30-2017, 01:06 PM -
by JenschutterI just inherited this (beloved) 1930 deluxe roadster. I have been staying busy with some long overdue work. She is overheating and spilling radiator fluid. I have flushed the radiator. How do I know if this is a radiator or water pump issue? The water pump hose does get hot so I think the pump is working. Thanks so much, as someone who does not know much about cars I will be asking a lot of questions,...You do not have permission to view this gallery.
This gallery has 1 photos.08-21-2020, 05:45 PM -
by Bill GSee the attached photo. This was taken a couple months ago when it was still colder outside and I would go out to the garage every week or so during the winter and start the car up for a while or even take it for a few mile drive. Since then I cleaned it out, but now after about 100 miles and warmer weather, it is forming again. Weather now is in the upper '70's to low '80's
If I hold...You do not have permission to view this gallery.
This gallery has 1 photos.05-08-2018, 03:23 AM -
by saxman657I've posted about this before, but am at a new stage before pulling the radiator so wanted to start with a fresh new post.
First background: I started the TLC of my father-in-law's Model A last year. First time out after changing out filters in bowl and filling up a dry gas tank I spewed a huge amount of rusty water. Got her home and shoved a hose down the radiator and flushed a lot of...07-04-2020, 03:21 PM -
by Big hammerAfter reading through pages in the cooling/engine sub treads I didn’t find an answer. So a 30/31 3 tube, 6 fins per inch measured temperature on the upper neck 174* and 141* measured on the lower neck outside temperature in the upper 70’s, for a drop of 33*. Should I except more of a drop ? would a new Bergs HD 10 fins per inch be better at cooling?
I also looked at the suppliers and manufactures...05-31-2021, 06:38 PM -
by Bill HarmsHere we go - fixing leaking radiator hoses. There are small seepages from the hoses-clamps. The coolant was last changed about 10-12 years ago, and is clean, which would be expected because the car was not driven very much during the past several years. However, the small leaks made a nice mess inside the engine compartment. I will be putting on new hoses and modern ratcheting type clamps (the old...You do not have permission to view this gallery.
This gallery has 5 photos.05-25-2021, 03:16 PM
Comment