User Manual

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Safety Precautions

To prevent accidents that could result in

serious injury and/or damage to vehicle or test

equipment, carefully follow safety rules and test

procedures at all times when working on vehicles.

•Alwayswearapprovedeyeprotection.

•NeveruseFuelPressureKitonDiesel or Flex

Fuel engines!

•NeverattachorremoveFuelPressureKitfrom

fuel rail test port with ignition key on.

•Alwaysplaceendof6footbleed-offhoseinan

approved container for fuel during testing and

whenbleedingofffuelpressure.

•Neversmokeorhaveopenamesnearvehicle.

Vaporsfromfuelandchargingbatteryarehighly

ammableandexplosive.

•Neverpermitfueltospillonhotengineparts.Ifa

spill or leak occurs, immediately turn ignition key

off, and clean up fuel.

•OnlyuseFuelPressureTesterKitformeasuring

fuel pressure.

•Alwaysoperatevehicleinawellventilatedarea.

English

The Fuel Pressure Kit was designed to help diagnose driveability

problems due to abnormally high or low fuel pressure.

Donotinhaleexhaustgasesorfuelvapors.

•Alwayskeepyourself,toolsandtestequipment

away from all moving or hot engine parts.

•AlwaysmakesurevehicleisinPARK

(Automatictransmission)orNEUTRAL (manual

transmission)andparking brake is set. Block

drive wheels.

•Neverlaytoolsonvehiclebattery.Terminalsmay

short together causing harm to yourself, tools or

battery.

•Neverleavevehicleunattendedwhilerunning

tests.

•Alwayskeepareextinguishersuitableforfuel/

electrical/chemicalreshandy.

•Alwaysuseextremecautionwhenworking

aroundignitioncoil,distributorcap,ignition

wires, and spark plugs. These components

contain High Voltage when engine is running.

•Completeall Pre-Testing Checksbefore

beginningfuelpressuretesting.

•Alwaysfollowvehiclemanufacturer’swarnings,

cautions and service procedures.

Fuel Pressure Tester Description

1 Rubber Boot: Boot is used to protect gauge and maintain

appearance.

2 Dial Face:Containsmeasurementscalesthatshowamount

of fuel pressure present in fuel system.

3 Pressure Relief Button: Used to relieve fuel pressure in

gaugehosebeforedisconnectinggaugehosefromfuelrail.

4 Bleed-Off Hose:A6foothosethatbleedsofffuelpressure

whenpressurereliefbuttonispressed.Neveruseableed-off

hoseshorterthan6foot.

Important: Always make sure end of bleed-off hose is in an

approved container for fuel at all times during testing and when

bleeding off fuel pressure!!

5 Gauge Hose: Hose that carries fuel to the gauge, so that

pressurecanbemeasured.

6 GM/Chrysler Test Port Adapter:Adapterisusedtoconnect

gaugehosetoGM,Chrysler,andothervehiclesequippedwitha

schrader valve test port on fuel rail.

7 Ford Test Port Adapter:Adapterisusedtoconnectgaugehoseto

Fordvehiclesequippedwithaschradervalvetestportonfuelrail.

8 GM TBI Test Adapter:AdapterisusedtoconnectgaugehosetoGMTBIvehiclesNOTequipped

with a schrader valve test port.

9 Banjo Bolt Adapters:AdapterareusedtoconnectgaugehosetoAsian,Europeanandselect

domesticvehiclesequippedwithfuelBanjoBoltConnections.

10 Dual Manifold Test Adapter:Adapterisusedtoconnectgaugehosetovehicleswithrubberhose

connectionsonthefuelrail,fuelline,orfuellter.

InstructionsinEnglish,French,andSpanish

InstructionsenAnglais,FrançaisetEspagnol

InstruccionesenInglés,FrancésyEspañol

553046RevA

4480

FUEL PRESSURE KIT

USER’S GUIDE

www.otctools.com

Summary of content (6 pages)

PAGE 1
Instructions in English, French, and Spanish Instructions en Anglais, Français et Espagnol Instrucciones en Inglés, Francés y Español Fuel Pressure kit user’s guide English 4480 ® The Fuel Pressure Kit was designed to help diagnose driveability problems due to abnormally high or low fuel pressure. 1 Safety Precautions Do not inhale exhaust gases or fuel vapors. • Always keep yourself, tools and test equipment To prevent accidents that could result in away from all moving or hot engine parts.
PAGE 2
Fuel Injection System Theory There are two basic types of fuel injection systems currently being used. The first type is called “port” or “multi-port” fuel injection. In this system, fuel injectors spray fuel directly into intake manifold behind intake valve. These systems typically have one fuel injector per cylinder. The second type is commonly called Throttle Body Injection (TBI) for GM and Chrysler vehicles or Central Fuel Injection (CFI) for Ford vehicles.
PAGE 3
Español • Reconecte las líneas de combustible según se describe en el manual de servicio del vehículo. Para vehículos importados y algunos vehículos locales con conexión tipo perno banjo ... • Envuelva una toalla de taller alrededor de la conexión tipo perno banjo mientras remueve el perno. • Desconecte el conjunto de medidor de presión y manguera fuera del adaptador de prueba tipo perno banjo. • Envuelva una toalla de taller alrededor del extremo de la manguera del medidor.
PAGE 4
GM/Chrysler Test Port Adapter Pressure Relief Button Ford Test Port Adapter For GM TBI vehicles without a test port ... • Disable fuel pump(s) and relieve fuel system pressure by following instructions in vehicle service manual. Fuel Test Port WARNING: Some vehicles may have more than one fuel pump. Failure to Pressure deactivate all fuel pumps can Relief result in spilled fuel, fire, or Button other hazardous conditions that could cause vehicle damage personal injury, or death.
PAGE 5
No desactivar todas las bombas de combustible podría resultar en combustible derramado, incendio u otras condiciones peligrosas que pueden causar daño al vehículo, lesiones personales, o la muerte.
PAGE 6
For import and domestic vehicles with rubber hose connections... • Place a shop towel under dual manifold test adapter. • Disconnect hose and pressure gauge assembly from dual manifold adapter. • Wrap a shop towel around end of gauge hose. Hold end of gauge hose over approved container to catch any remaining fuel. • Loosen hose clamp securing vehicle’s rubber fuel line to dual manifold adapter. Disconnect fuel line from adapter. • Loosen hose clamp securing dual manifold adapter hose to vehicle.