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Discussion Starter #1
I took my son out in the 65 coupe to teach him how to drive a stick. He was doing real good until he was starting from a stand still and popped the clutch at idle, you know, the stop-go-stop-go. Before I could get him to push the clutch in, it did it three times.
Now the Stang surges at idle, studders on takeoff, backfires/pops more when down shifting, and surges when coasting between power and engine braking, it runs fine under power as far as I can tell. I changed the points, condinsor, cap and rotor, no help. I checked the vacume advance and it holds vacume.
I'm now thinking something in the timing went south on me.
Any Thoughts?

Bill
 

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You might check the carb. Lean condition could cause a surge. Also, might have knocked some crud loose and it's plugged/stuck something up.
 
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Discussion Starter #3
I agree with Joe....All that jerking may have mal-adjusted the carb, or some foreign object is in the jets, etc..
 

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If the float levels are too high, it will also cause a surge.
 
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