Mitsubishi 4DQ3 Service Manual page 60

Complaint
Possible cause
Engine is too cold.
Radiator dissipates heat
E excessively
t;
>
"'
Insufficient coolant
Cl
Failure of radiator to dis­
0 sipate heat properly
0
u
Water leak through
cylinder head gasket
Cracks in crankcase water
jacket
Defective starter switch
Defective starter magnetic
switch
Defective starting motor
Defective starting motor
free wheel
E
t; Defective flywheel ring
� gear and pinion
Battery voltage drop
·.::
+­
(.) Open circuit in heater
QJ
plugs or pilot lamp
Short circuit in heater
plugs
Defective alternator
Defective alternator
relay
Improper wiring
Jammed moving parts
Worn cylinders, pistons
or piston rings
Sticking piston rings
"'
... Excessive main bearing
+-
clearance
co
C.
gi Loose connecting rod cap
- � bolts
E Interference between
valve and piston
Broken valve springs
Excessive valve clearance
Foreign substances in
cylinders
Excessive gear backlash
0 0
0 Cl
0
0 0
0 0
0
0 0 0
0
0
Cl
-
0
- 0
0
0 0
0 0
-
0
0
0
0
0
Abnormal ex­
haust smoke
0
0 0 0
0
0
0
0 0
- -
-
0 --,-
0
- -
0 0 0
0
Cl
()
0 0
0
0
Engine
hunts
- - - -
0
- - - -
0
0
0
- - - -
0
- -
0 0
0
- - -
0 0
- - - -
0
0
- - - -
0
0
- - - -
-
0 0 0 0
- 0 0 0 0
0
- - - -
0
- 0