long crank,hard start. on 2003 Ford Mustang GT

my 2003 ford mustang gthas a hard start.when cold will not start on first crank.always starts on second try.i have 40 psi on fuel rail and good battery and charging system.also good spark.please help.

by in Mesa, AZ on December 14, 2009
1 answer
ANSWER by on December 14, 2009
Check for trouble codes stored in the engine module, check that the software in the engine module is up to date and check the fuel mixture (trim) settings. Verify that you don't have any vacuum leaks or air leaks in the intake system.