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Bad stumble 120-130 1965

Hello everyone! Any ideas on a stumble occurring just off the idle stops both on acceleration AND deceleration. Timing, dwell OK, and timing seems to be advancing properly. Stock engine with rebuilt SU carbs. New fuel filter downstream of the fuel pump. Doesn`t do it all the time. More pronounced when engine not fully warmed up; lean? OK at higher RPMs.

Does this sound like carbs or ignition? I`m going to check valve clearance ASAP.
Car has run well for years.

Many thanks!






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New Bad stumble [120-130][1965]
posted by  Cornbread  on Wed Feb 27 20:53 CST 2013 >


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