GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Chevrolet
🢒
2008
🢒
Optra
🢒
Engine
🢒 Engine Mechanical - 1.8L (L79)
Engine
All Description and Operation
Engine Component Description
All Special Tools and Equipment
Special Tools
All Visual Identification
Disassembled Views
Cleaning, Inspection, and Adjustment
Crankshaft and Bearing Cleaning and Inspection
Cylinder Head Cleaning and Inspection
Oil Pan Cleaning and Inspection
Oil Pump Cleaning and Inspection
Piston, Connecting Rod, and Bearing Cleaning and Inspection
Timing Belt Inspection
Valve Rocker Arm and Shaft Cleaning and Inspection
Diagnostic Procedures
Connecting Rod Bearing Noise
Diagnostic Starting Point - Engine Mechanical
Engine Compression Test
Engine Knocks Cold and Continues for Two-Three Minutes and/or Knock Increases with Engine Torque
Engine Noise Diagnosis
Engine Noise on Start-Up, but Only Lasting a Few Seconds
Engine Noise Under Load
Knocks at Idle Hot
Light Knock Hot
Main Bearing Noise
Oil Consumption Diagnosis
Oil Leak Diagnosis
Oil Pressure Diagnosis and Testing
Piston Noises
Symptoms - Engine Mechanical
Disassembly, Overhaul, Repair, and Assembly
Cylinder Head Assemble
Cylinder Head Disassemble
Exhaust Manifold Installation
Exhaust Manifold Removal
General Diagnostic Information
Base Engine Misfire with Abnormal Valve Train Noise
General Information
Cleanliness and Care
Mechanical Specifications
Engine Mechanical Specifications
Fastener Tightening Specifications
Removal, Installation, and Replacement
Camshaft Gear Replacement
Camshaft Replacement
Crankshaft Replacement
Cylinder Head Replacement
Engine Mount Replacement
Engine Oil and Oil Filter Replacement
Engine Replacement
Intake Manifold Replacement
Oil Pan Replacement
Oil Pump Replacement
Piston, Connecting Rod, and Bearing Replacement
Timing Belt Cover Replacement
Timing Belt Replacement
Valve Guide Reaming, and Valve and Seat Grinding
Valve Rocker Arm Cover Replacement