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Gas and Carb Question


67Cadi
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On occasion when you shut of my '67 it will keep running. If I turn it back on then switch it off 90% of the time it will shut off. At first I thought it was a problem with the ignition switch but power is being cut to the coil. confused.gif

Is this phenomenon dieseling? It's been a while since I had a car with a carb. What grade fuel do you guys run in your cars? Since mine had sat for so long I've been running the cheap stuff with a can of Techron for the past two tanks. Is this a sign of needing to rebuild the carb?

I have also seen lead substitute in a can, is this something I should consider running in my car? Or is it just a waste of $$$$?

In advance I appreciate your help!

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Sounds like it may be dieseling. Try a tank or 2 of 93 octane, it may clear up the problem. My 76 Ford F-250 with a 460 will do the same on todays regular, along with spark knock, etc. It has a thirst for 93 octane (quite a thirst) but it runs as it should with it.

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