Opel Frontera UE. Manual - part 147

6A–12

ENGINE MECHANICAL (X22SE 2.2L)

Troubleshooting Procedure

The slapping sound stops when spark plug on bad 
cylinder is shorted out.

Condition

Possible cause

Correction

Timing belt noise

Timing belt tension is incorrect

Replace pusher or adjust the 
tension pulley or replace timing belt

Tensioner bearing defective

Replace

Timing belt defective

Replace

Timing wheels defective

Replace

Timing belt comes in contact with 
timing cover

Replace timing belt and timing cover

Valve noise

Valve and valve guide seized

Replace valve and valve guide

Valve spring broken

Replace

Valve seat off–positioned

Correct

Crankshaft noise

Crankshaft end play excessive 
(noise occurs when clutch is 
engaged)

Replace thrust bearing

Engine knocking

Preignition due to use of spark plugs 
of inadequate heat range

Install Spark Plugs of adequate heat 
range

Fuel too low in octane rating

Replace fuel

Wide Open Throttle enrichment 
system failure

Refer to Section 6E

Selection of transmission gear 
incorrect

Caution operator of incorrect gear 
selection

Engine overheating

Refer to “Engine Lacks Power"

Others

Water pump defective

Replace

Drive belt slipping

Adjust tension of drive belt or 
replace drive belt

ENGINE MECHANICAL (X22SE 2.2L)

6A–13

Abnormal Combustion

Condition

Possible cause

Correction

Trouble in fuel injection system

Fuel pressure control valve defective

Replace

Fuel filter clogged

Replace

Fuel pump clogged

Clean or replace

Fuel tank or fuel pipe clogged

Clean or replace

Fuel injector clogged

Clean or replace

Fuel pump relay defective

Replace

Power supply cable for fuel pump 
loosely connected or defective

Reconnect, correct or replace

Manifold Absolute Pressure Sensor 
circuit open or shorted

Correct or replace

Manifold Absolute Pressure Sensor 
defective

Replace

Engine Coolant Temperature (ECT) 
Sensor circuit open or shorted

Correct or replace

ECT Sensor defective

Replace

Throttle Position Sensor adjustment 
incorrect

Reconnect

Throttle Position Sensor defective

Replace

Throttle Position Sensor connector 
loosely connected

Reconnect

Vehicle Speed Sensor cable loosely 
connected or defective

Correct or replace

Vehicle Speed Sensor loosely fixed

Fix tightly

Vehicle Speed Sensor in wrong 
contact or defective

Replace

Engine Control Module cable loosely 
connected or defective

Correct or replace

Trouble in emission control system

Heated Oxygen Sensor circuit open

Correct or replace

Heated Oxygen Sensor defective

Replace

Signal vacuum hose loosely fitted or 
defective

Correct or replace

Exhaust Gas Recirculation Valve 
defective

Replace

ECT Sensor circuit open or shorted

Correct or replace

ECT Sensor defective

Replace

Evaporator system

Refer to Section 6E

Trouble in ignition system

————

Refer to “Engine Lacks Power"

Trouble in cylinder head parts

Carbon deposits in combustion 
chamber

Remove carbon

Carbon deposit on valve, valve seat 
and valve guide

Remove carbon

6A–14

ENGINE MECHANICAL (X22SE 2.2L)

Engine Oil Consumption Excessive

Condition

Possible cause

Correction

Oil leaking

Oil pan drain plug loose

Retighten or replace gasket

Oil pan setting bolts loosened

Retighten

Oil pan gasket broken

Replace gasket

Front cover retaining bolts loose or 
gasket broken

Retighten or replace gasket

Head cover retaining bolts loose or 
gasket broken

Retighten or replace gasket

Oil filter adapter cracked

Replace

Oil filter attachings bolt loose or 
rubber gasket broken

Retighten or replace oil filter

Crankshaft front or rear oil seal 
defective

Replace oil seal

Oil pressure unit loose or broken

Retighten or replace

Blow–by gas hose broken

Replace hose

Engine/Transmission coupling area

Replace oil seal

Oil leaking into combustion 
chambers due to poor seal in valve 
system

Valve stem oil seal defective

Replace

Valve stem or valve guide worn

Replace valve and valve guide

Oil leaking into combustion 
chambers due to poor seal in 
cylinder parts

Cylinders and pistons worn 
excessively

Rebore cylinder and replace pistons 
and others

Piston ring gaps incorrectly 
positioned

Correct

Piston rings set with wrong side up

Correct

Piston ring sticking

Rebore cylinder and replace pistons 
and others

Piston ring and ring groove worn

Replace pistons and others

Return ports in oil rings clogged

Clean piston and replace rings

Crank case ventilation, Positive 
Crankcase Ventilation System 
malfunctioning

Positive Crankcase Ventilation Hose 
clogged

Clean

Others

Improper oil viscosity

Use oil of recommended S.A.E. 
viscosity

Continuous high speed driving and/
or severe usage such as trailer 
towing

Continuous high speed operation 
and/or severe usage will normally 
cause increased oil consumption 

ENGINE MECHANICAL (X22SE 2.2L)

6A–15

Fuel Consumption Excessive

Oil Problems

Engine Oil Pressure Check

1. Check for dirt, gasoline or water in the engine oil.

a

Check the viscosity of the oil.

b

Change the oil if the viscosity is outside the 
specified standard.

c

Refer to the “Maintenance and Lubrication" 
section of this manual.

2. Check the engine oil level.

The level should fall somewhere between the “ADD" 
and the “FULL" marks on the oil level dipstick.
If the oil level does not reach the “ADD" mark on the 
oil level dipstick, engine oil must be added.

3. Remove the oil pressure unit.

4. Install an oil pressure gauge.

5. Start the engine and allow the engine to reach 

normal operating temperature (About 80

°

C).

6. Measure the oil pressure.

Oil pressure should be:

150 kPa (21.8 psi) at idle speed.

7. Stop the engine.

8. Remove the oil pressure gauge.

9. Install the oil pressure unit.

10. Start the engine and check for leaks.

Condition

Possible cause

Correction

Trouble in fuel system

Mixture too rich or too lean due to 
trouble in fuel injection system

Refer to “Abnormal Combustion"

Fuel cut function does not act

Refer to “Abnormal Combustion"

Trouble in ignition system

Misfiring or abnormal combustion 
due to trouble in ignition system

Refer to Hard Start or Abnormal 
Combustion Troubleshooting Guide

Others

Engine idle speed too high

Reset Idle Air Control Valve

Returning of accelerator control 
sluggish

Correct

Fuel system leakage

Correct or replace

Clutch slipping

Correct

Brake drag

Correct

Selection of transmission gear 
incorrect

Caution operator of incorrect gear 
selection

Excessive Exhaust Gas 
Recirculation flow due to trouble in 
Exhaust Gas Recirculation system

Refer to Abnormal Combustion

Condition

Possible cause

Correction

Oil pressure too low

Wrong oil in use

Replace with correct engine oil

Relief valve sticking

Replace

Oil pump not operating properly

Correct or replace

Oil pump strainer clogged

Clean or replace strainer

Oil pump worn

Replace

Oil pressure gauge defective

Correct or replace

Crankshaft bearing or connecting 
rod bearing worn

Replace

Oil contamination

Wrong oil in use

Replace with new engine oil

Oil filter clogged

Replace oil filter

Cylinder head gasket damage

Replace gasket

Burned gases leaking

Replace piston and piston rings or 
rebore cylinders

Oil not reaching valve system

Oil passage in cylinder head or 
cylinder body clogged

Clean or correct