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FUEL SYSTEM (DFI) 3-25
Troubleshooting the D FI System
Sample Diagnosis Sh eet
Rider name:
Registration No. (license plate No.): Year of initial registration:
Model: Engine No.: Hull No.:
Date problem occurred: Mileage:
Environment when problem occurred.
Weather
□
fine, □ cloudy, □ rain, □ snow, □ always, □ other:
Temperature □ hot, □ warm, □ cold, □ very cold, □ always
Problem
frequency
□ chronic, □ often, □ once
Altitude □ normal, □ high (about 1 000 m or more)
Watercraft conditions when problem occurred.
□ turn on immediately after ignition switch ON, and turn off after 1 ∼ 2 seconds
(normal).
□ lights blink after ignition switch ON, and stay on (DFI problem)
Warning
LED light, FI
character, FI
mark
□ unlights (LED light, meter unit, ECU or its wiring fault).
□
sometimes lights up (probably wiring fault).
□ starter motor not rotating.
Starting
difficulty
□ starter motor rotating but engine doesn’t turn over.
□ starter motor and engine don’t turn over.
□
no fuel flow (□ no fuel in tank, □ no fuel pump sound).
□
engine flooded (do not crank engine with throttle opened, which promotes
engine flooding).
□ no spark.
□ other:
□ right after starting.
Engine stalls
□ when opening throttle lever.
□ when closing throttle lever.
□
when moving off.
□
when stopping the watercraft.
□ when cruising.
□ other:
□ very low idle speed, □ very high idle speed, □ rough idle speed.
Poor running at
low speed
□ battery voltage is low (charge the battery).
□ spark plug loose (tighten it).
□ spark plug dirty, broken, or gap maladjusted (remedy it).
□ backfiring.
□
afterfiring.
□ hesitation when acceleration.
□ engine oil viscosity too high.
□ engine overheating.
□ other: