Fault Finding Chart - Volvo Penta AQ145A Workshop Manual

Fault finding chart

Engines Engine
does not stops
start
X
X X
X X
X X
X
X
Cable Colour Code
Marking Colour
A Red
A' Red
B Light blue
C Orange
D Light brown
E Black
E' Black
F Yellow/red
stripes
G Dark red
H Grey
I Light yellow
J Dark blue
K Black
L Red
Engine does not
Engine runs
reach correct
unevenly or
speed at full
vibrates
throttle or engine
abnormally
knocking
X
X
X
X
X
mm 2
10.6
5.3
1.3
5.3
1.3
5.3
1.3
5.3
1.3 SW, Ignition switch: I = IGN, B = BAT, S = SOL
1.3 Bosch, Ignition switch: I = 15, 75, B = 30 S = 50
1.3
1.3
1) Hour meter or fuel gauge
42.4
2) Fuses
42.4
Engine
becomes
abnormally
hot
X
X
X
X
X
CAUSE
Main switch not connected; discharged
battery, break in electrical cables or main
switch.
Empty fuel tank fuel cock closed, blocked
fuel filter.
Water or contamination in the fuel.
Defective spark plugs.
Burnt contact breakers, moisture in the
distributor and ignition cables.
Idling speed not correctly adjusted.
Defective tachometer.
Boat abnormally loaded.
Weed growth on the boat hull and on the
outboard drive.
Damaged propeller.
Blockage in the cooling water intake, oil
cooler (AQ145), cooling jackets, heat ex-
changer. Defect impeller or thermostat flu-
id level too low in the expansion tank.
The fuel quality is not corresponding to the
ignition setting.
53