Poor Fuel Economy

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Definition: Fuel economy, as measured by an actual road test is noticeably lower than expected. Also, economy is noticeably lower than it was on this vehicle at one time, as previously shown by an actual road test.

Preliminary

  • Refer to the Powertrain On Board Diagnostic (OBD) S...

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Service Manual Table of Contents

Document Tags

Document Title: Poor Fuel Economy

fuel

test

system

check

refer

pressure

injector

coil

engine

camshaft

feed

connect

ignition

tester

following

spark

ground

plug

wire

cracks

resistance

range

improper

damaged

cooling

mechanical

valve

inspect

exhaust

possible

check fuel

spark tester

spark plug

spark plugs

engine cooling

engine mechanical

exhaust system

actual road test

check fuel pressure

spark plug wire

plug wire coil

value outside specified

outside specified range