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FUEL SYSTEM (DFI) 3-35
Troubleshooting the DFI System
îž‘ very low idle speed, îž‘ very high idle speed, îž‘ rough idle speed.
îž‘
battery voltage is low (charge the battery).
îž‘
spark plug loose (tighten it).
îž‘ spark plug dirty, broken, or gap maladjusted (remedy it).
îž‘ backfiring.
îž‘ afterfiring.
îž‘ hesitation when acceleration.
îž‘ engine oil viscosity too high.
îž‘ brake dragging.
îž‘ engine overheating.
îž‘ clutch slipping.
Poor running
at low speed
îž‘ other:
îž‘ spark plug loose (tighten it).
îž‘
spark plug dirty, broken, or gap maladjusted (remedy it).
îž‘
spark plug incorrect (replace it).
 knocking (fuel poor quality or incorrect,  use high-octane gasoline).
îž‘ brake dragging.
îž‘ clutch slipping.
îž‘ engine overheating.
îž‘ engine oil level too high.
îž‘ engine oil viscosity too high.
Poor running
or no power at
high speed
îž‘ other:
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