Table of Contents
Advertisement
3 - Connect the pump to the tank using 3/8" I.D. fuel hose. Connect the outlet of the pump to the steel line which runs to the
front of the vehicle with 3/8" I.D. fuel hose, depending on the diameter of the steel fuel line. All fuel hose used must meet
SAE J30 performance standards.
10.4 Fuel Line Mounting
All the supplied fuel fittings on the fuel pump, manifold and fuel filter are #6. The fuel line connecting these components should
be 3/8" ID or larger.
DANGER!
FAILURE TO USE A FUEL HOSE THAT MEETS SAE J30 STANDARDS COULD RESULT IN FUEL LEAKS. A
FUEL LEAK MAY RESULT IN A FIRE OR EXPLOSION HAZARD WHICH COULD CAUSE SERIOUS INJURY
OR DEATH.
1 - If using existing fuel lines, inspect and replace any hose, clamps, or fuel line showing any sign of aging or does not meet
SAE J30 fuel hose specifications. If you are not using existing fuel lines, you will need a fuel line routed to and from the
engine compartment and fuel rails. Use a 3/8" steel fuel line available at any auto parts store. All steel fuel line must
meet SAE J526 standards.
DANGER!
FAILURE TO USE STEEL FUEL LINE THAT MEETS SAE J526 STANDARDS COULD RESULT IN FUEL
LEAKS. A FUEL LEAK MAY RESULT IN A FIRE OR EXPLOSION HAZARD WHICH COULD CAUSE
SERIOUS INJURY OR DEATH.
DANGER!
TAKE PRECAUTIONS TO ENSURE THAT ALL FUEL LINE ROUTINGS ARE AWAY FROM HEAT SOURCES,
SUCH AS THE ENGINE, CATALYTIC CONVERTER, OR EXHAUST PIPES. A FIRE OR EXPLOSION HAZARD
COULD CAUSE SERIOUS INJURY OR DEATH.
DANGER!
RIGID FUEL LINE TUBING SHOULD BE USED FOR UNDER VEHICLE RUNS, SUCH AS ALONG VEHICLE
FRAME RAILS OR UNDER FLOOR PANS. FAILURE TO DO SO IS A POTENTIAL FIRE OR EXPLOSION
HAZARD, WHICH COULD CAUSE SERIOUS INJURY OR DEATH.
2 - Anchor all fuel lines securely to solid chassis members at 1 ½ foot intervals using rubber coated steel clamps. Use of
only approved steel fuel line tubing will afford maximum fuel line protection against road hazards, gravel bombardment
and premature wearing due to flexing, temperature extremes, road salt, weather, etc.
10.5 Fuel Filters
WARNING! It is very important the fuel filters have the proper flow capacity, burst pressure rating and filter size.
The flow capacity of the filters must at least 60 gallons per hour (gph), and the filter size must be no
bigger than 10 microns for the high fuel pressure filter and not bigger than 75 microns for the fuel pump
inlet filter. The high-pressure fuel filter should be rated for at least for 150 psi burst pressure.
DANGER!
FAILURE TO USE HIGH PRESSURE FUEL FILTER LINE RATED FOR A MINIMUM OF 100 PSI BURST
PRESSURE COULD RESULT IN FUEL LEAKS OR BURSTING OF THE FUEL FILTER. A FUEL LEAK MAY
RESULT IN A FIRE OR EXPLOSION HAZARD, WHICH COULD CAUSE SERIOUS INJURY OR DEATH.
The fuel filter supplied by Holley meets or exceeds the above specifications. Most filters for carburetor systems and other EFI
systems do not.
The fuel pump inlet filter must be plumbed between the fuel tank and the fuel pump. It should be mounted as close to the fuel
tank as possible and should be mounted no higher than the top of the fuel tank. The high-pressure fuel filter should be plumbed
between the fuel pump and the fuel rail. It should be mounted as close to the fuel rail as possible but should not be mounted
above the fuel rail level.
Be careful to ensure the suction part of the fuel system contains no air leaks. Air leaks are caused by holes and/or crevices so
small that they will not leak fuel. Just because fuel is not leaking out does not mean air is not leaking in. Common causes of air
leaks are not using thread sealing compound on fittings and cracks or holes in fuel lines. Air leaks could potentially cause fuel
pump failure and or inadequate fuel supply to the fuel rails.
10.6 Return Line Installation
DANGER!
DO NOT USE THE VAPOR CANISTER LINES AS A FUEL RETURN LINE. POSSIBLE FUEL LEAKS MAY
CREATE A FIRE OR EXPLOSION HAZARD, CAUSING SERIOUS INJURY OR DEATH.
WARNING!
Use only approved steel fuel line. The return fuel line should enter the fuel tank at the "fuel level
10
Advertisement
Table of Contents
Troubleshooting
