I have a 2006 impreza wagon. Runs great, just replaced spark plugs, wires and ignition coil. Temps have fallen into the 30's and the car will crank for awhile before starting. The car only does this in the cold mornings, runs and starts great the rest of the day. What is the problem. Sensor, fuel check valve, fuel regulator, MAF sensor? Any ideas? Not throwing any engine codes either.
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