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09-10-2011, 05:07 AM | #1 |
Member
Join Date: Jul 2011
Location: Auburn WA
Posts: 73
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Random overheating and Fountain.
So i drive my 30' coupe Alot. So far, its only over heated on me twice, which is wierd. It has a 6 blade fan, fan shroud, and a 4 core rad. Ill be driving down the road and the temp will be fine, then all of the sudden the gauge will peg and the rad will shoot water out the top and drain almost the entire radiator. Let it sit, refill with water, and its fine. No overheating, no fountain, nothing. Just every once in a blue moon it does this.
Any clue? Marty |
09-10-2011, 05:33 AM | #2 |
Senior Member
Join Date: May 2010
Location: Eastern Tennessee
Posts: 11,513
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Re: Random overheating and Fountain.
Marty, even with what info you have given, the details are still vague but it appears if this is a stock Model A engine that this has been an issue for awhile since you have a 6 blade fan and a fan shroud, --or someone likely would not have seen the need for those two items. What makes me wonder is if the 6 blade fan is setting up a wall of air that is trapped by the shroud which is impeding airflow through the radiator at speed.
The next question I would have is what is the condition of the radiator? I know it is a four core but those have been around for 75 years. It could be stopped up or the fins fractured from the tubes. I will say that generally speaking, for water to "shoot out" and for it to drain the radiator, that is usually caused by pressure. Steam is generally what causes this and not cylinder compression pressure. I would need to know all of the details first before what I could give an accurate diagnosis. Anything else would probably just be an off-the-wall guess at random thoughts. |
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09-10-2011, 06:44 AM | #3 |
Senior Member
Join Date: May 2010
Posts: 107
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Re: Random overheating and Fountain.
Dyou have a thermastat that may be sticking?.
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09-10-2011, 07:44 AM | #4 |
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Join Date: May 2010
Location: Epping N.H.
Posts: 2,987
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Re: Random overheating and Fountain.
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