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Hello, have you checked the ignition timing and if so what was it set at?
Thanks, that's going to be the first step is to make sure it's around 12 degrees before top dead center at idle with the vacuum advance unhooked and the line plugged. IF the timingiscorrect with the advance hooked back up you'll need to check that the timing does change when it's connected. It'svery likely the advance unit is not working causing it to die. let me know what you find and we can work further if needed.
Sounds good,look forwardto hearing from you
That's for the modulator valve for the transmission. If it is not connected it will cause shift problems aswell as it to possibly die when putting in gear due to low vacuum. Do you see where it goes?
It's very possible. If the ignition system and carb are in good shape and set properly that would be the next in line for causing this.