Circuit/System Testing

Verify none of the conditions listed below exist:

• Exhaust system leaks. Refer to Symptoms - Engine Exhaust .
• Split, kinked, or improperly connected vacuum hoses.
• Insufficient fuel in the tank.
• Leaks in the air induction system or the air intake ducts.
• Missing air filter element.
• A cracked evaporative emissions canister.
• Plugged, obstructed, or leaking evaporative emissions system pipes.
• Leaks in the crankcase ventilation system. Refer to Crankcase Ventilation System Inspection/Diagnosis .
• Engine vacuum leaks.
• Low fuel system pressure. Refer to Fuel System Diagnosis .
• Contaminated fuel. Refer to Alcohol/Contaminants-in-Fuel Diagnosis .
• Lean fuel injectors. Refer to Fuel Injector Diagnosis .

• If a condition is found 

  Repair as necessary.