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rich lean mixture

Engine

Model: 911S, Year:1977, Mileage:120k, Type of use:Street use only
stock 2.7 liter.when the engine gets up to the proper running temperture, its seems to stubble taking off in first gear unless I really rev it up. Does this indicate lean or rich mixure. The cold or warm start in warm weather is great. The engine idels a round 1100-1200 RPMs.

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