322
STARTING AND OPERATING
Light spark knock at low engine speed s is not harm ful to
you r engine. However, continu ed heavy spark knock at
high speed s can cause damage and immediate service is
requ ired .
Reformulated Gasoline
Many areas of the country requ ire the use of cleaner
burning gasoline referred to as “Reform ulated Gasoline.”
Reform ulated gasolines contains oxygenates, and are
specifically blend ed to red uce vehicle emissions and
improve air quality.
Poor quality gasoline can cause problem s such as hard
starting, stalling and hesitations. If you experience these
sym ptom s, try another brand of gasoline before consid -
ering service for the vehicle.
The manu factu rer strongly supports the use of reform u-
lated gasolines. Prop erly blend ed reform ulated gasolines
will provid e excellent perform ance and durability for the
engine and fuel system components.
Over 40 auto manu factu rer’s world wide have issu ed and
end orsed consistent gasoline specifications (the World -
wide Fuel Charter, WWFC) to define fuel prop erties
necessary to deliver enhanced emissions, perform ance,
and durability for you r vehicle. The manu factu rer recom -
mend s the use of gasoline that meets the WWFC speci-
fications if they are available.
Gasoline/Oxygenate Blends
Some fuel suppliers blend unlead ed gasoline with oxy-
genates such as 10% ethanol, MTBE, and ETBE. Oxygen-
ates are requ ired in som e areas of the country during the
winter months to red uce carbon monoxid e emissions.
Fuels blend ed with these oxygenates may be used in
you r vehicle.
| Categories | Jeep Manuals, Jeep Wrangler Manuals |
|---|---|
| Model Year | 2007 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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