Page Number - 3
Fuel Pressure Test Kit
MODEL MV5546
Form 824129
Introduction
The Mityvac Fuel System Pressure Test Kit is designed to
perform fuel pressure testing on most domestic and imported
cars and trucks that are equipped with return and returnless
electronic fuel injection systems.
The tester can help identify and diagnose:
Low fuel pressure
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Faulty fuel pump
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Faulty fuel pressure regulator
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Leaking fuel injectors
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Clogged fuel filter
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Pinched fuel lines
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Safety Precautions
The use of this service tool requires the exposure of highly
flammable gasoline. To prevent fires, explosions and/or severe
injury, always apply extra precautions when diagnosing or
working on fuel systems.
The fuel pressure test kit is designed for servicing a variety of
vehicles in a safe, convenient manner. However, fuel delivery
systems vary widely between makes and models of vehicles,
potentially requiring additional steps or equipment to perform a
proper service job. The procedures outlined in this manual are
to serve as guidelines for the use of this equipment. In addition
to these guidelines, always follow the manufacturer’s recom-
mended procedures when servicing each unique vehicle. Use
common sense in the application of this tester; and do not at-
tempt to force a test on a fuel system for which this equipment
is not designed to perform.
Always read carefully and understand instructions prior to
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using this equipment
Wear safety glasses at all times
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Operate the vehicle only in a well ventilated area, and
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away from potential sources of flame or ignition.
Prior to starting an engine, make sure all components of
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the tester, body parts, and personal clothing are clear of
rotating engine components
Avoid burns by remaining cautious of engine parts that
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may become hot when the engine is running
Never leave a vehicle unattended while testing
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Check and secure all fuel system connections before
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starting the vehicle or activating the fuel pump
Wear gloves and protective clothing to avoid the contact of
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gasoline on skin. If contact occurs, immediately wash the
area and perform necessary first aid
Always keep a fire extinguisher on hand when perform
-
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ing fuel related diagnostics. Make sure the extinguisher is
rated for fuel, electrical and chemical fires
Avoid spilling fuel on hot engine parts. Clean-up any fuel
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spills immediately after they occur.
Specifications
Maximum Rated Pressure: 120 PSI (800 kPa) (8 bar)
Components, Service Parts and Accessories
The Mityvac Fuel Pressure Test Kit combines the highest
quality materials and workmanship to create a durable, finely
tuned diagnostic tool, which with proper care will provide years
of valuable service. All components are designed and quality
controlled in the U.S.
Following is a list of standard components, service parts and
accessories relating to model MV5546. Components and
accessories are available from your local Mityvac distributor.
Service parts, warranty information and technical service
information are available at the contact information shown on
the front of this user manual.
Standard Kit Components
Model MV5546 includes the following high quality components:
3.5” (90 mm) diameter diaphragm style Pressure Gauge
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– 0 to 120 PSI (0 to 8 bar) (0 to 800 kPa) scale of
measure
– Push-button pressure relief valve
– 360° swivel hook
– Protective rubber boot
1/8” (3 mm) ID x 6’ (1.8 m) long Pressure Relief Hose
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5/16” (8 mm) ID x 4’ (1.2 m) long Extended Pressure Hose
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Inline Pressure Test Hose
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(2x) Scissor Hose Clamp
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Custom Storage Case
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Automotive Fuel System Test Adapters (see pages 5 – 6)
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(6x) Quick-connect Replacement Clip
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