Chart A-3 Engine Cranks But Will Not Run

Chart A3: Engine Cranks But Will Not Run:

Ignition System Circuit.:

CIRCUIT DESCRIPTION
This chart assumes that battery condition and engine cranking speed are OK, and there is adequate fuel in the tank.

CHART TEST DESCRIPTION
Number(s) below refer to circled number(s) on the diagnostic chart.

1. Perform OBD system check to determine if the Powertrain Control Module (PCM) and the Malfunction Indicator Lamp (MIL) are functioning, before proceeding with this chart.
2. An injector with a resistance value too low will cause an injector fuse to open. If Injector # 6 or # 9 fuse is open, 4 injectors will be disabled and a no start may occur. The resistance of each injector should be within one ohm of each other.
3. Use fuel pressure gage J 34730-1. Wrap a Shop towel around the fuel pressure tap to absorb any small amount of fuel leakage that may occur when installing the gage.
4. Chart C-4A will address all problems related to the causes of a no spark condition. Refer to Chart C4A. Chart C-4 Distributor Ignition (DI) System Check

DIAGNOSTIC AIDS
An EGR valve sticking open can cause a low air/fuel ratio during cranking.
^ Unless engine enters "Clear Flood" at the first indication of a flooding condition, it can result in a no start.
^ Check duct work between mass air flow sensor and throttle body for air leaks.
^ A defective Mass Air Flow (MAF) sensor may cause a no start or a stall after start. Disconnect the MAF sensor. The PCM will default to speed density (MAP, IAT, RPM) to calculate load and air flow. If the condition is corrected and the connections are OK, replace the MAF sensor
If above are all OK, refer to "Hard to Start" in Diagnosis By Symptom.
Hard to Start