Service Station Information
Fuel Filler Location
CJ Models: Below right rear tail/stop taillights.
Cherokee: Just forward of left rear side marker light.
Wagoneer: Just forward of left rear stop/ taillights
Truck: Behind cab at right side of pickup box.
CJ Models
Fuel Requirement
CJ Models
All engines require the use of unleaded fuel to reduce ex
haust emissions. Use of leaded fuel can result in substantially
higher emissions. Fuel should have an antiknock index (AKI)
of at least 87 AKI (A lower octane AKI 1s acceptable at eleva
tions above 1500 feet). On those vehicles equipped with a
catalytic converter, use of leaded fuel can render the catalyst
ineffective.
Cherokee-Wagoneer-Truck
All engines for these models (except on California vehicles)
will operate efficiently on regular grade leaded fuel or un
leaded fuel of 87 AKI or higher. California senior V-8's have
catalytic converters and require unleaded fuel. The use of
unleaded fuel helps in the reduction of hydrocarbon em1s-
�
sions and provides some increase in spark plug and exhaust •· ·•
system life.
All Models
In the event of spark knock (ping) reduce initial timing setting
within specified range (See Technical Specifications and
Tune-Up Data chart) or select an alternate source of fuel.
87
Summary of Contents for Cherokee 1977
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