What kind of fuel hose is best?
Fuel, emissions and vacuum hoses are made of special materials to
handle the liquids and vapors they carry. Fuel hose, for example, is
made to withstand gasoline and alcohol (up to a certain percentage
concentration). It is also reinforced to withstand internal
pressure.
It is extremely important not to use any other type of hose for a
fuel line. Use only approved fuel hose that is rated for carrying
gasoline.
It is also extremely important to use hose with the correct pressure
rating for the application. Hose for electronic fuel injection (EFI)
must have a higher pressure rating (35 to 70 psi or higher) than
that approved for carbureted engines (7 to 10 psi).
You can always use higher rated EFI hose on a carbureted
application, but never the reverse. If lower pressure carburetor
fuel hose is used on a high pressure EFI engine, it may burst and
cause a fire.
High pressure EFI hoses often require special high pressure
rolled-edge clamps rather than standard clamps or spring clamps.
Some EFI hose also uses special connectors. Ford and Mercury fuel
injected engines, for example, have hard nylon fuel lines held in
place by push connectors.
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