Jeep Cherokee 1977, Руководство пользователя

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7. Turn off the engine when stopped for more than a minute,
,ding requires a rich fuel mixture, and running the engine
unnecessarily for even a minute burns more gasoline
than needed for restarting.
8. Winter driving conditions cut economy-good reason for
preparing your vehicle for cold weather use. Change to
winter grade crankcase 011 for better fuel economy
through reduced engine friction.
9. Let a cold engine warm up while driving at a light throttle
for the first mile or so, not with the vehicle sitting still.
Warm-up will be faster and with less wear.
10.
Check tire pressure regularly. Underinflat,on increases
rolling resistance of the tires which has a marked effect
on fuel usage. For best comfort, fuel economy and tire
life, tires should be inflated as recommended in the Tires
and Wheels section of this manual
11.
Maintain your vehicle as recommended in this manual. A
tuned-to-specifications engine will give you better fuel
economy and performance. Common wasters of gasoline
are:
• Idle speed faster than specification
• Idle adjustment rich
• Initial spark retarded from spec1f1cat1on
Six-cylinder vehicles sold for principal use in high altitudes
(above 4000 feet elevation) were built with a manual altitude
compensation device. For ad1ustment of this device and re-
�
quired timing ad1ustments, refer to page
110.
·•
12.
Drive courteously. The thoughtful driver invariably 1s a
driver whose actions provide better fuel economy.
How to Check Gas Mileage Accurately
1. Select a service station with a level driveway. near a
freeway-type road. and have the tank filled brim-full.
2. Record the odometer reading in tenths of a mile.
3. Cruise the vehicle on a freeway-type road at a steady
speed of 50 mph for at least 60 miles. 30 miles out and 30
miles back to the same service station and gas pump
4. Have the tank filled, again brim-full. Record the amount
in tenths of a gallon.
5. Record the odometer reading. and calculate the exact
miles driven in tenths of a mile
6. Divide the miles driven by the number of gallons used. to
obtain gas mileage.
A handy Gas Mileage Record form is
provided on page 128.
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