Sample diagnosis sheet, Troubleshooting the dfi system – Kawasaki STX-15F User Manual

Page 79

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FUEL SYSTEM (DFI) 3-25

Troubleshooting the DFI System

Sample Diagnosis Sheet

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:

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