Engine Starts Hard or Fails to Start Cold
*** UPDATED BY TSB #289101 DATED OCT. 1991Check the following:
1. Distributor cap for carbon tracking [1]
2. Fuel pump and fuse
3. Fuel pump relay
4. Fuel leaks
5. vacuum (intake air) leak
6. Cold start valve not operating [2]
7. Air flow sensor plate rest position
8. Fuel pressure incorrect
9. Coolant temperature sensor and wiring [2]
10. Inadequate cold-start enrichment [2]
11. Ignition system ground [3]
[1] Refer to TSB #289101 for parts update
[2] For testing procedure refer to, COMPUTERIZED ENGINE CONTROLS.
[3] For testing procedure refer to, IGNITION SYSTEMS.
NOTE: After each symptom, the sub-system that could be the source of the symptom are listed and should be checked in the order they are listed, beginning with #1.