Opel Frontera UBS. Service manual — part 371
SERVICE INFORMATION 00 – 7
3.
INSUFFICIENT POWER
Clogged air cleaner element
Clean or replace the air cleaner
element
Air cleaner
Checkpoint
Possible cause
Correction
Water particle in the fuel
Replace fuel
Fuel
Clogged fuel filter element
Replace the fuel filter element or
the fuel filter cartridge
Fuel filter
Defective fuel feed pump
Repair or replace the fuel feed pump
Fuel feed pump
Injection nozzle sticking
Replace the injection nozzle
Injection nozzle
Injection nozzle injection starting pressure
too low
Improper spray condition
Adjust or replace the injectionn
nozzle
Fuel injection pipes damaged or obstructed
Replace the fuel injection pipes
Fuel injection pipes
Defective regulating valve
Repair or replace the regulating
valve
Injection pump
Defective delivery valve
Replace the delivery valve
Defective timer
Repair or replace the timer
Worn cam disk
Replace the cam disk
Improper control lever operation
Adjust or replace the control lever
Defective injection timing
Adjust the injection timing
Repair or replace the injection pump
timer
Weak governor spring
Replace the governor spring
Worn plunger
Replace the plunger saaembly
Worn cam disk
Replace the cam disk
00 – 8 SERVICE INFORMATION
Checkpoint
Possible cause
Correction
Booster compensator pipe broken or
cracked
Replace the booster compensator
pipe
Turbocharger
Exhaust gas leakage from the exhaust
system
Air leakage from the intake system
Repair or replace the related parts
Defective waste gate
Repair or replace the waste gare
Defective turbocharger assembly
Replace the turbocharger assembly
Blown out cylinder head gasket. Worn
cylinder liner.
Piston ring sticking between the valve and
valve seat
Replace the related parts
Compression
pressure
Valve clearance improperly adjusted
Adjust the valve clearance
Valve clearance
Valve spring weak or broken
Replace the valve spring
Valve spring
Exhaust pipe clogged
Clean the exhaust pipe
Exhaust system
Open and improperly set adjusting screw
seal
Adjust and reseal the adjusting
screw
Full load adjusting
screw seal
SERVICE INFORMATION 00 – 9
4.
EXCESSIVE FUEL CONSUMPTION
5.
EXCESSIVE OIL CONSUMPTION
Checkpoint
Possible cause
Correction
Engine oil
Engine oil unsuitable
Too mauch engine oil
Replace the engine oil
Correct the engine oil level
Oil seal and gasket
Oil leakage from the oilseal and/or the
gasket
Replace the oil seal and/or the
gasket
Air breather
Clogged air breather
Clean the air breather
Intake and exhaust
valve
Worn valve stems and valve guides
Replace the intake and exhaust
valves and the valve springs
Checkpoint
Possible cause
Correction
Fuel system
Fuel leakage
Repair or replace the fuel system
related parts
Air cleaner
Clogged air cleaner element
Clean or replace the air cleaner
element
Idling speed
Poorly adjusted idling speed
Adjust the idling speed
Injection nozzle
Injection nozzle injection starting pressure
too low
Improper spray condition
Adjust or replace the injection
nozzle
Fuel injection timing
Fuel injection timing improperly
Adjust the fuel injection timing
Injection pump
Defective Delivery valve resulting is fuel
drippage after fuel injection
Replace the delivery valve
Turbocharger
Air leakage from the turbocharger intake
side
Repair the turbocharger intake side
Defective turbocharger assembly
Replace the turbocharger assembly
Valve clearance
Valve clearance improperly adjusted
Adjust the valve clearance
Compression
pressure
Blown out cylinder head gasket. Worn
cylinder liner.
Piston ring sticking between the valve and
valve seat
Replace the related parts
Valve spring
Valve spring weak or broken
Replace the valve spring
00 – 10 SERVICE INFORMATION
6.
OVERHEATING
7.
WHITE EXHAUST SMOKE
Checkpoint
Possible cause
Correction
Fuel
Water particles in the fuel
Replace the fuel
Fuel injection timing
Delayed fuel injection timing
Adjust the fuel injection timing
Compression
pressure
Blown out cylinder head gasket. Worn
cylinder liner.
Piston ring sticking between the valve and
valve seat
Replace the related parts
Turbocharger
Defective turbocharger
Replace the turbocharger
Inlet and exhaust
valves
Valves seals
Defective valve seales.
Worn valves stems and valve guides
Replace the valve seales, the valves,
and the valve guides
Checkpoint
Possible cause
Correction
Cooling water
Insufficient cooling water
Replace the cooling water
Fan clutch
Oil leakage from the fan clutch
Replace the fan clutch
Fan belt
Fan belt loose or cracked causing slippage
Replace the fan belt
Radiator
Defective radiator cap or clogged radiator
core
Replace the radiator cap or clean the
radiator core
Water pump
Defective water pump
Repair or replace the water pump
Cylinder head and
cylinder body sealing
cap
Defective searing cap resulting in water
leakage
Replace the sealing cap
Thermostat
Defective thermostat
Replace the thermostat
Cooling system
Cooling system clogged by foreign
material
Clean the foreign material from the
cooling system
Fuel injection timing
Fuel injection timing improperly adjusted
Adjust the fuel injection timing
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