Hard Start

DEFINITION
Engine cranks OK, but does not start for a long time. Eventually starts, or may start but immediately dies.

CHECK:

- For water contaminated fuel.
- Fuel system pressure.
- TPS for sticking or binding.
- EGR operation. Valve should be fully seated closed with engine "OFF".
- For a faulty in-tank fuel pump check valve which would allow the fuel in the lines to drain back to the tank after the engine is stopped.

Check ignition system for:
- Proper sparking voltage and duration.
- Worn distributor shaft.
- Bare and shorted wires.
- Improper pickup coil resistance or poor connections.
- Loose ignition coil connections.
- Moisture in distributor cap.
- Spark plugs for wetting, cracks, wear, improper gap, burned electrodes, or heavy deposits.