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EFV-8 Club Forum / General Ford Discussion / 1940 Ford Flathead Overheating

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Discussion Topic: 1940 Ford Flathead Overheating -- page: 1 2 3 4 5 6

39topless

06-13-2014 @ 7:19 PM

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Great Idea, That will give you a base line to work back from. Let's just assume that this new coil is ok.

40guy

06-13-2014 @ 1:53 PM

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I have another coil I am going to try and see if it fixes the problem.

TomO

06-13-2014 @ 7:03 AM

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Check the connections at the ignition switch, coil resister and the coil. They should all be snug. Also check the screw that holds the condenser to the coil and the distributor bolt that grounds the condenser.

Tom

40guy

06-12-2014 @ 1:02 PM

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I just checked the spark and it is blue but it don't fire everytime it kind does it intermittent.

39topless

06-12-2014 @ 12:40 PM

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Your coil is getting hot internally not from external conditions. You are going to have to have your coil rebuilt or exchange for a new/rebuilt one. Not too expensive but the best money (like the battery)
you can spend. Good Luck

supereal

06-12-2014 @ 12:07 PM

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If the starter solenoid is making the proper contact, there is no need to bypass it. The "hot start" circuit bypasses the ignition resistor to compensate for the low voltage produced by the starter demand, often dropping the coil input voltage below the 3 volts necessary for adequate spark.

40guy

06-12-2014 @ 10:26 AM

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I am going to test the spark this evening and see what happens

woodiewagon46

06-12-2014 @ 10:21 AM

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Matco Tools makes a spark tester PN, KD2756 that I keep in my tool box and would recommend to anyone that drives their car. It has a neat clip that attaches to any place on the engine and connects to a spark plug wire. It will let you know immediately if you have spark or not. Sounds to me you are looking for what many Hot Rod guys install in their cars called a "hot start " relay. It bypasses everything and sends 12V right to the starter. I don't know if it is available for 6V. Several guys have given you suggestions of what sounds like this item. You need to define what your problem really is. Overheating, coil breakdown, bad grounds, vapor lock, you cover a lot of areas that may or may not be related to each other.

40guy

06-12-2014 @ 7:32 AM

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To check the spark I need to pull one plug wire and fire the engine and compare the spark from when the engine starts to when the engine gets hot?

TomO

06-12-2014 @ 6:30 AM

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Yes, if there are no cracks in the insulated handles. Grab the insulated part of the wire as an additional safety precaution.

You can also go to NAPA and purchase P/N SER 606 for about $13. Fuse puller pliers are sold at most hardware stores.

Tom

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