Symptoms - Ignition System

Ignition System

Symptoms	Ignition System
Find the symptom in the left column and perform the test/inspection procedure in the right column, be sure to review each cell of the table to identify all tests for a symptom.
Hard Start Surges/Chuggles Lack of Power, Sluggishness, or Sponginess Detonation/Spark Knock Hesitation, Sag, Stumble Cuts Out, Misses Poor Fuel Economy Rough, Unstable, or Incorrect Idle and Stalling Dieseling, Run-On Backfire	Inspect for proper Ignition System operation. Refer to Electronic Ignition (EI) System Diagnosis . Inspect spark plugs and spark plug wires. Refer to Spark Plug Wire Inspection and Spark Plug Wire Replacement . Inspect the spark plugs for correct application. Refer to Ignition System Specifications .
Hard Start Surges/Chuggles Lack of Power, Sluggishness, or Sponginess Hesitation, Sag, Stumble Cuts Out, Misses Poor Fuel Economy Rough, Unstable, or Incorrect Idle and Stalling Backfire	Inspect the crankshaft position (CKP) sensor for the following: CKP sensor for damage and proper installation. Refer to Crankshaft Position Sensor System Diagnosis . Inspect the CKP Sensor and corresponding harness for electro-magnetic interference (EMI).