Hey, just wondering what the ideal air:fuel ratio is during a cold start. Thanks.

 

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there is no "ideal" ratio for a cold start. It all depends on engine temp. When the engine is started, the ECU initially only looks at the coolant temp signal and the crank signal, until stable combustion is reached, ie: after all cylinders have fired a bunch of times. maybe 10:1 is about right for a stone cold engine, but that is just an educated guess.