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General Procedures > < Fuel System

Focus 1999 (08.1998-12.2004)

Fuel System - General Information - Liquified Petroleum Gas (LPG) - Fuel System Focus 1999 (08/1998-12/2004)
Diagnosis and Testing

Inspection and Verification

  1. Verify the customer concern by operating the system.
  1. Visually inspect for obvious signs of mechanical or electrical damage.

Visual Inspection Chart

Mechanical Electrical
  • Fuel lines(s)
  • Fuel connector(s)
  • Fuel tank
  • Filler valve
  • Fuel filter
  • Fuel vaporizer
  • Fuel distributor
  • Fuse(s)
  • Wiring harness
  • Loose or corroded connector(s)
  • Relay(s)
  • Solenoid(s)
  • Fuel level sensor
  1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
  1. If the concern is not visually evident, verify the customers concern and refer to the Symptom Chart.

Symptom Chart

Symptom Chart

Symptom Possible Sources Action
Engine cranks but does not start
*
Fuel charging and controls.
*
REFER to Section  303-04A Fuel Charging and Controls / 303-04B Fuel Charging and Controls / 303-04C Fuel Charging and Controls / 303-04D Fuel Charging and Controls - Turbocharger / 303-04E Fuel Charging and Controls / 303-04F Fuel Charging and Controls / 303-04K Fuel Charging and Controls / 303-04M Fuel Charging and Controls.
Poor starting
*
Fuel charging and controls.
*
REFER to Section  303-04A Fuel Charging and Controls / 303-04B Fuel Charging and Controls / 303-04C Fuel Charging and Controls / 303-04D Fuel Charging and Controls - Turbocharger / 303-04E Fuel Charging and Controls / 303-04F Fuel Charging and Controls / 303-04K Fuel Charging and Controls / 303-04M Fuel Charging and Controls.
*
Air ingress into the fuel lines
*
REFER to Section  310-00A Fuel System - General Information / 310-00B Fuel System - General Information / 310-00C Fuel System - General Information.
Engine starts but immediately stops when switched to LPG
*
Fuel charging and controls.
*
REFER to Section  303-04A Fuel Charging and Controls / 303-04B Fuel Charging and Controls / 303-04C Fuel Charging and Controls / 303-04D Fuel Charging and Controls - Turbocharger / 303-04E Fuel Charging and Controls / 303-04F Fuel Charging and Controls / 303-04K Fuel Charging and Controls / 303-04M Fuel Charging and Controls.
*
Air ingress into the fuel lines
*
REFER to Section  310-00A Fuel System - General Information / 310-00B Fuel System - General Information / 310-00C Fuel System - General Information.
Poor idling when running on LPG
*
Fuel charging and controls.
*
REFER to Section  303-04A Fuel Charging and Controls / 303-04B Fuel Charging and Controls / 303-04C Fuel Charging and Controls / 303-04D Fuel Charging and Controls - Turbocharger / 303-04E Fuel Charging and Controls / 303-04F Fuel Charging and Controls / 303-04K Fuel Charging and Controls / 303-04M Fuel Charging and Controls.
*
Air ingress into the fuel lines
*
REFER to Section  310-00A Fuel System - General Information / 310-00B Fuel System - General Information / 310-00C Fuel System - General Information.
Engine misfire when running on LPG
*
Fuel charging and controls.
*
REFER to Section  303-04A Fuel Charging and Controls / 303-04B Fuel Charging and Controls / 303-04C Fuel Charging and Controls / 303-04D Fuel Charging and Controls - Turbocharger / 303-04E Fuel Charging and Controls / 303-04F Fuel Charging and Controls / 303-04K Fuel Charging and Controls / 303-04M Fuel Charging and Controls.
*
Faulty spark plug or ignition coil
*
REFER to Section  303-07A Engine Ignition / 303-07B Engine Ignition.
*
Air ingress into the fuel lines/fuel system leak
*
REFER to Section  310-00A Fuel System - General Information / 310-00B Fuel System - General Information / 310-00C Fuel System - General Information.
Excessive fuel consumption running on LPG
*
LPG Fuel injector(s) are inoperative.
*
REFER to Section  303-04A Fuel Charging and Controls / 303-04B Fuel Charging and Controls / 303-04C Fuel Charging and Controls / 303-04D Fuel Charging and Controls - Turbocharger / 303-04E Fuel Charging and Controls / 303-04F Fuel Charging and Controls / 303-04K Fuel Charging and Controls / 303-04M Fuel Charging and Controls.
*
Faulty spark plug or ignition coil
*
REFER to Section  303-07A Engine Ignition / 303-07B Engine Ignition.
*
Air ingress into the fuel lines/fuel system leak
*
REFER to Section  310-00A Fuel System - General Information / 310-00B Fuel System - General Information / 310-00C Fuel System - General Information.

General Procedures > < Fuel System