10-24-2016, 08:45 PM | #21 |
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Re: Losing Coolant
It is very obvious. The cap isn't leaking, if coolant is going out, it's through the overflow. My grandfather had that problem, he changed the cap and it hasn't leaked since
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10-24-2016, 09:42 PM | #22 | |
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Re: Losing Coolant
Quote:
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10-24-2016, 10:07 PM | #23 |
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Re: Losing Coolant
Look at reply #8 to see how I back flushed my original radiator. This helped a lot since rust was blocking the top of some tubes.
http://www.fordbarn.com/forum/showth...ator+wesenberg |
10-24-2016, 11:28 PM | #24 |
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Re: Losing Coolant
Ryan,
A. Losing one (1) gallon within (20) miles, with no water leaking from hoses, no water leaking from radiator cap, no water getting in oil thus making you oil look like milk, your assumption in No. 1 above appears "Right On". "My only other thought is that things could be plugged up and water is just getting pushed out the overflow?" B. Then in your added remark in no. 17: "I noticed the moto-meter begin to spike in town, but before that I was driving between 45-50 MPH. It made it almost the entire trip running normally, only started heating way up in the last 3 miles." C. This no. 17 remark indicates that "if" extending the overflow tube and "if" providing the nail does not keep coolant from escaping, more than likely a very typical vintage Model A radiator problem is occurring, i.e., your radiator tubes are possibly "partially" clogged and cannot drain coolant as fast as the water pump pumps coolant; hence, initially water exits out of the over flow until you barely have enough circulating coolant to cool your engine. D. With your reported results of beginning to overheat after driving 45 mph for about 17 miles and losing close to a gallon indicates a strong possibility that your radiator tubes need cleaning so coolant falling down by gravity can keep up with the supply of coolant provided by your water pump. |
10-25-2016, 12:48 AM | #25 |
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Re: Losing Coolant
After back flushing or rodding out the radiator, I'd also install a thermostat. This is better for the engine's quick warm up, and it slows the coolant flow some.
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10-25-2016, 05:35 AM | #26 |
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Re: Losing Coolant
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10-25-2016, 07:26 AM | #27 |
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Re: Losing Coolant
A SLIGHT head gasket leak usually shows up as a 1 or 2 cylinder MISS, on initial start up, & clears up shortly.
Bill W.
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10-25-2016, 07:46 AM | #28 | |
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Re: Losing Coolant
Quote:
If link doesn't work go to youtube and search model a cooling system.
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10-25-2016, 06:28 PM | #29 |
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Re: Losing Coolant
Hi Ryan,
FWIW: Not all Model A radiator problems are alike. Again, appears you are correct in that your reported coolant loss in this case "is" one of your major problems here. Losing one (1) gallon after 17 miles & driving a little further while losing coolant can spell engine overheating disaster. With an engine running, one does "not" even need a "water pump" on a cooling system to lose coolant out of a radiator overflow pipe. Model T's and tractors built as late as the 1940's had no water pumps. Coolant circulated very freely and quite rapidly without water pumps. Coolant even easily flows "upwards" to "fill" the tops of these radiators. When coolant is "constantly" exiting the over flow tube while driving, in a few more miles, one will be up Crap Creek without a paddle because when his impeller is sitting in air, his Model A water pump will be transformed into a hot air windmill. With no coolant circulation through your radiator your Model A cooling system resembles a WWII diesel emersion heater sitting in a garbage can of boiling water. And Mr. Jackson did not cover this fact in his You Tube film. Surprise us all & let us know what you find. LOL Last edited by H. L. Chauvin; 10-25-2016 at 06:31 PM. Reason: typo |
10-26-2016, 08:40 AM | #30 |
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Re: Losing Coolant
Your radiator is plugged.
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10-26-2016, 10:04 AM | #31 |
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Re: Losing Coolant
Whenever I have a leak I can not find, be it coolant, trans oil, or engine oil, I add some fluorescent dye to the system and after running it check various places with a infrared light. Even if it is coming out the overflow the dye will show on the bottom of the car and end of tube.
Last edited by Y-Blockhead; 10-26-2016 at 10:56 AM. |
10-26-2016, 10:44 AM | #32 |
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Re: Losing Coolant
Yes for sure the radiator is plugged . I had the same problem cured by a new rad .The pump is designed for a good rad and overwhelms the top tank with partly plugged rad (normally the centre third, too much waterpump grease) The system is not sealed so the overflow pipe pulls in air now and again so no vacuum in the system . The top tank then overflows but not continuously if you get my drift .
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10-26-2016, 05:54 PM | #33 |
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Re: Losing Coolant
Well, I'm glad the consensus is a plugged radiator. It's better than the alternatives. I will definitely report back with my findings on Friday. It would be really cool if I could find someone with a thermal camera. I'll also have to do some calling around to see if there's a shop in the area that can rod out a radiator.
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10-26-2016, 06:00 PM | #34 |
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Re: Losing Coolant
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10-26-2016, 07:01 PM | #35 |
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Re: Losing Coolant
Like Mitch said tubes are old corroded and thin fix the problem the first time.
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10-26-2016, 08:47 PM | #36 |
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Re: Losing Coolant
Hi Ryan,
Prior to paying for rodding out, you may luck out and be able to clean the tubes with a few of the home remedies mentioned in the archives under Search. Some radiators are clogged with water pump grease mixed with crud. Others are clogged with minerals deposited from well water or treated tap water which is full of minerals after contacting earth. POR 15 Marine Clean did the job for me on a dirty original radiator .... today, never exceed 180 degrees even in 100 degree weather. Other may chime in with their successful Betty Crocker Recipes. LOL |
10-28-2016, 09:25 AM | #37 |
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Re: Losing Coolant
Well, I dumped in a gallon of vinegar and ran the engine for 15 or so minutes last night. I'll take it out for a ride today, I think the roads are washed off by now. I'll see how that works out.
If anyone else has a suggestion on what to use as a cleaner I'd like to hear it. |
10-28-2016, 10:18 AM | #38 |
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Re: Losing Coolant
To late now
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10-28-2016, 02:01 PM | #39 |
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Re: Losing Coolant
AutoZone type parts stores will loan a HC sniffer to check for combustion gasses in your cooling system.
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10-28-2016, 06:19 PM | #40 |
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Re: Losing Coolant
If you think it might be grease, dirt, grime etc... in the radiator. Pull the radiator out, block off the inlet, outlet, overflow tube, put in 1 gallon of Simple Green concentrate and screw on the cap. Slosh it back and forth several times a day for a few days and then flush it out with water.
Get a cheap meat thermometer from the grocery store so you can check the coolant directly to see what the water temperature actually is.
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