Advertisement
TROUBLESHOOTING
27-4
7.
Cylinder
Compression Inspection
Test
cylinder
compression.
Is
the
compression
low?
YES
_
.
Valve clearance too small
•
Valve stuck open
•
Worn
cyl
inder and piston rings
•
Damaged cylinder head gasket
•
Seized valve
•
Improper valve timing
NO
-
GO
TO
STEP B.
8.
Carburetor Inspection
Check carburetor for clogging.
Is the
carburetor
clogged?
YES
- Carburetor not serviced
frequently
enough
NO
-
GO TO STEP 9.
9.
Engine
Oil
Inspection
Check oi
l
le\lel and condi
tion.
Is
there correct
level
and good condition?
NO
_.
Oil
level too
high
• Ojl
level
too
low
•
Contaminated oil
YES
- GO
TO
STEP
10.
10.
lubrication
Ins
pection
Remove cylinder
head
cover and
inspect
lubrication.
Is
the
valve
train lubricated
properly?
NO
_
.
Clogged oil
passage
•
Clogged oil orifice
YES
-GOTOSTEP1
1.
11
.
Over Heating Inspection
check for engine over heating.
Is
the engine
over heating
?
NO
_.
Coolant
level too low
•
Fan motor
not working
(Faulty ECM
)
•
Thermostat stack closed
•
Excessive
carbon build
up
in combustion chamber
•
Use
of poor quality fue
l
•
lean fuel
mixture
•
Wrong type of fuel
YES
-
Faulty
automatic
transmission
system
Advertisement
