Hard to Start
Definition: Engine cranks OK, but does not start for a long time. Does eventually run, or may start and immediately dies.POSSIBLE CAUSE ACTION
Throttle Position Sensor (TPS). ^ Check for binding or high TPS voltage with throttle closed (should read between 0.20 Volts and 1.50 Volts).
Fuel pump relay. ^
Fuel Pressure. ^
Contaminated Fuel. ^ Check fuel filters. Alcohol/Contaminants-In-Fuel Testing Procedure
Fuel injectors. ^