Diagnostic Routines Index

Concern Routine

Cranks Normally But Won't Start Cranks Normally But Won't Start

Starts Normally But Wont Run (Stalls) Starts Normally But Wont Run (Stalls)

Cranks Normally But Hard to Start Cranks Normally But Hard to Start

Rough Idle Rough Idle

Misses Under Load Misses Under Load

Low Idle (Stalls On Deceleration or Quick Stop) Low Idle (Stalls On Deceleration or Quick Stop)

Hesitates or Stalls On Acceleration Hesitates or Stalls On Acceleration

Backfire (Intake or Exhaust) Backfire (Intake or Exhaust)

Lack of Power Lack of Power

Surges at Steady Speed Surges at Steady Speed

High Idle (Engine Diesels) High Idle (Engine Diesels)

Engine Noise Engine Noise

Poor Fuel Economy Poor Fuel Economy

High Oil Consumption High Oil Consumption

Spark Knock/Ping Spark Knock/Ping

Engine Vibrates at Normal Speeds Engine Vibrates at Normal Speeds

Engine Runs Cold Engine Runs Cold

Engine Runs Hot Engine Runs Hot

Exhaust System Concerns (Visual Smoke) Exhaust System Concerns (Visual Smoke)

Gasoline Smell Gasoline Smell

Check Engine (MIL) Light Always On or Never On Check Engine (MIL) Light Always On or Never On

State Emission Test Failure State Emission Test Failure