Fillpipe Restrictor: Description and Operation
Fuel System Views:
FUEL HOSES AND CLAMPS
The hoses used on fuel injected models are of a special type and only hoses marked EFI/EFM may be used as replacements. The clamps used are of a rolled edge construction to prevent cutting hoses, and all replacements must be of this type.
NO-LEAD FILLER TUBE
All catalyst equipped models have a special filler tube. The filler tube also contains a deflector to prevent the addition of fuel by other than an unleaded fuel nozzle. Labels are attached at the instrument panel and near the fuel door reading "unleaded fuel only" to remind the operator.
PRESSURE/VACUUM FILLER CAP
The loss of liquid fuel or vapor is prevented by using a filler cap which releases pressure when in tank pressure exceeds 10.9 to 13.45 kPa (1.58 to 1.95 psi). Only caps with these specifications may be used as replacements to maintain the integrity of the fuel system. Filler caps must also be rated to relieve fuel tank vacuum when it reaches between .97 and 2.0 kPa (.14 and .29 psi).