Coils that are mounted on top of the Engine.

My sister has a small block Crys-her-eyes-out 318 which has the coil mounted behind the carby on the inlet. Her problem is when the car is hot,( running temp) it will stop and is difficult to start again and if running can't pull the skin off a custard pudding. I think it is the coil overheating and breaking down and that it should be moved to either the firewall or inner guard/fender. What would you guys suggest as she has her car at a garage now and they don't seem to listen to her suggestion of moving the coil?

What year vehicle are we talking about? If it has an electronic ignition it sounds more like an ignition module getting hot vs the coil. I've had several coils mounted atop the engine, and the heat has never been an issue for them that I recall. Those dadgummed ignition modules are a different story.

If you think its the coil ??? just move it not a big deal may need a longer coil wire..,,,But the module is probably the problem....The only coil problem I had was on my 8N tractor got hot quit running changed it no more problem

Early sbc's mounted the coil on the intake behind the carb and I usually moved it to the firewall, I suggest you do the same, but with a new coil as I believe that one is somewhat compromised. It's probably low on oil, most coils are oil filled, and it breaks down when it gets hot.

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Originally Posted by rspears

What year vehicle are we talking about? If it has an electronic ignition it sounds more like an ignition module getting hot vs the coil. I've had several coils mounted atop the engine, and the heat has never been an issue for them that I recall. Those dadgummed ignition modules are a different story.

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I agree,the coils where mounted there for years and years from the factory with no troubles.

Millions of 318's run every day with the coil mounted like that. If the problem really is the coil, a new one in the same place will fix it.

Thank you so much guys for your input and yes you are right about the module. The mechanic took the car for a test run after playing with the engine and it broke down on him so got an auto electrician out to check the engine and he came to the same conclusion as Roger. So once the parts arrive,the car should be good to go and I can have my car back.Thanks again for your help as I was lost on this one and my sister has a habit of just paying people to sort the problem without checking if I may be able to help.