1999 PCED On Board Diagnostics II |
SECTION 5: Pinpoint Tests |
Note
This Pinpoint Test is intended to diagnose the following:
- Fuel Pressure
- Fuel Supply Lines
- Fuel Filter (9155)
- Fuel Injectors (9F593)
- Fuel Pressure Regulator (9C968)
- Fuel Injection Supply Manifold (Fuel Rail) (9F792)
- Fuel Rail Solenoid Shut-Off Valves (9D278)
Tables and Charts
TOOLS AND FUEL INJECTOR APPLICATION CHART
| Engine Application |
Part Number 9F593 |
Electrical Connector Color |
Resistance Ohms |
Pressure Set-Point kPa (psi) |
Fuel Delivery System Special Tool Kit |
| Tool Kit 134-00114 Contains |
5.4L NGV E/F-Series
4.6L NGV Crown Victoria |
F5TE-BA |
GREEN |
4-6 |
655 ± 69 kPa (95 ± 10 psi) and
within 20 kPa (3 psi) of each other |
Fuel Pressure Gauge |
Filler Connector Venting Tool |
Injector Flow Tester |
4.6L Crown Victoria NGV
5.4L E/F-Series (NGV)
WARNING
NATURAL GAS IN THE FUEL SYSTEM IS AT HIGH PRESSURE AT ALL TIMES.
TO AVOID INJURY OR FIRE, RELEASE THE FUEL PRESSURE FROM THE FUEL SYSTEM BEFORE
DISASSEMBLING ANY FUEL SYSTEM COMPONENT. TO RELEASE THE PRESSURE FROM THE
SYSTEM FOLLOW THE PRESSURE RELIEF PROCEDURE:
PRESSURE RELIEF PROCEDURE
- THUMP INERTIA FUEL SHUTOFF (IFS) SWITCH AND VERIFY THE BUTTON HAS
BEEN UPSET (DO NOT RESET).
- CONNECT NATURAL GAS FUEL PRESSURE TESTING KIT 134-00114 AT THE
SCHRADER VALVE LOCATED ON THE FUEL INJECTION SUPPLY MANIFOLD (FUEL RAIL).
TESTING KIT VALVE MUST BE CLOSED.
- POSITION THE TESTING KIT VENTING HOSE TO A WELL-VENTILATED
LOCATION, PREFERABLY OUTSIDE OR INTO VENT STACK.
- GRADUALLY OPEN THE TESTING KIT VALVE TO RELIEVE THE FUEL PRESSURE
AND ALLOW IT TO ESCAPE (TAKES APPROXIMATELY ONE TO TWO MINUTES.).
USE CARE TO PREVENT COMBUSTION FROM ESCAPING FUEL. NO SMOKING,
OPEN FLAMES OR ANY KIND OF ARCING.
SAFE FUEL HANDLING PRACTICES: NATURAL GAS—FIRE
- REPORT ALL FIRES TO THE APPROPRIATE AUTHORITIES.
- FLAMES FROM NATURAL GAS HAVE A YELLOW AND/OR BLUE COLOR.
- KNOW THE LOCATIONS OF PORTABLE FIRE EXTINGUISHER, FIRE BLANKETS,
AND FIRE ALARMS. LEARN HOW TO USE THEM.
- USE AN ABC RATED/CERTIFIED FIRE EXTINGUISHER OR FIRE BLANKET TO
FIGHT FLAMMABLE GAS FIRES.
FIRST AID
- WHEN OVERCOME BY VAPORS, IF SAFE, MOVE VICTIM TO FRESH AIR. IF
NOT BREATHING, GIVE ARTIFICIAL RESPIRATION OR CPR (CARDIOPULMONARY
RESUSCITATION) AS APPROPRIATE. SEEK MEDICAL ATTENTION IMMEDIATELY.
- FOR IRRITATED EYES, FLUSH WITH LARGE AMOUNTS OF WATER FOR 15
MINUTES. REMOVE CONTACT LENSES, IF WORN. SEEK MEDICAL ATTENTION.
HEALTH
- NATURAL GAS (AND ALL OTHER FUEL VAPORS) CAN BE HARMFUL BY
INHALATION.
- ALL FUELS CAN BE HARMFUL OR FATAL IF SWALLOWED.
- FUELS AND PRODUCTS CONTAINING METHANOL (E.G. WINDSHIELD WASHER
FLUID) CAN CAUSE BLINDNESS IF SWALLOWED.
- ALL FUELS ARE IRRITATING TO THE EYES AND RESPIRATORY SYSTEM.
HANDLING
- BE AWARE OF THE MERCUROUS MERCAPTAN "ROTTEN EGG" SMELL OF NATURAL
GAS.
- USE FLAMMABLE GAS HANDLING PRECAUTIONS.
- KEEP FLAMMABLE GASES IN APPROVED, LABELED CONTAINERS.
- USE IN WELL-VENTILATED AREAS AND CONTROL VAPORS. BE AWARE THAT
NATURAL GAS IS NOT VISIBLE, IS LIGHTER THAN AIR, CAN TRAVEL ALONG THE CEILING,
AND MAY COLLECT IN HIGH HOLLOWS.
- WHEN TRANSFERRING FLAMMABLE GASES, CONNECT THE VENT STACK TO THE
SOURCE, AND GROUND THE SOURCE TO THE EARTH.
- DO NOT SMOKE, OR USE HEAT/SPARK PRODUCING EQUIPMENT NEAR NATURAL
GAS.
- DO NOT EAT, DRINK OR SMOKE WHERE FUELS ARE HANDLED, PROCESSED OR
STORED.
- WASH HANDS THOROUGHLY AFTER HANDLING ANY FUEL.
LEAKAGE
- NOTIFY THE PROPER AUTHORITIES IN THE EVENT OF ANY LEAKAGE YOU
HAVE NOT BEEN TRAINED TO ADDRESS.
- STOP, AND ALLOW FUEL TO VENTILATE TO OUTSIDE ATMOSPHERE AFTER ANY
FUEL ESCAPE.
NOTE
A small amount of pressure 21 kPa (3 psig) will remain in the fuel rail.
High pressure still exists in the fuel tanks.
