Car engine repair Opel Astra G (petrol)

Technical data (gaps and dimensions in mm)

Compression Test — Description and Interpretation
1. If the engine runs poorly or intermittently, check the ignition system and fuel system. If the reasons for poor engine operation cannot be found, perform a...

Engine Overhaul — General Information
Engine Overhaul - General Notes It is not always easy to come to a conclusion about the advisability of a complete engine overhaul, since it is necessary to...

Engine — removal and installation
Dismantling the power unit - methods and safety precautions If a decision has been made to dismantle the engine for major repairs or repairs of the main...

Power unit — dismantling and installation
Dismantling Attention! The engine is removed from the vehicle as part of the power unit (together with transmission). The power unit is lowered and removed...

Engine Overhaul — Disassembly Procedure
1. It is recommended to disassemble the engine on a special stand; if there is no stand, then secure the engine on a level surface. 2. If you purchase a...

Cylinder head — disassembly
1. On a 1.6L single shaft engine, remove the cylinder head, tappets and thrust washers ( see Chapter 2A ). 2. On all twin-shaft engines, remove the pushrod...

Cylinder head and valves — cleaning and checking
1. Thorough cleaning of the cylinder head and valve mechanism parts followed by inspection will allow us to assess the scope of work required to repair the...

Cylinder head — assembly
1. Install the spring support washer, dip the oil seal into fresh engine oil and place it on the bushing (see photo) 2. Lubricate the valve stems with fresh...

Pistons and connecting rods — removal
1. On 1.4, 1.6 and 1.8 L engines, remove the cylinder head and oil pan. On 1.4 and 1.6 L engines, remove the oil deflector. On all engines, remove the oil...

Crankshaft — removal
Engines 1.4, 1.6 and 1.8 l 1. Remove the oil pump and flywheel (leading disk). 2. Remove the connecting rods with pistons. 3. Check the crankshaft end play...

Cylinder Block — Cleaning and Checking
Cleaning 1. Remove all attachments from the cylinder block, unscrew the sensors. Remove the plugs by drilling holes in the plugs, screwing a self-tapping screw...

Connecting rod and piston group — check
1. Before checking, the connecting rods and pistons should be cleaned and old rings should be removed from the piston. 2. Carefully move the ring apart, moving...

Crankshaft — check
Checking axial play 1. The axial clearance of the crankshaft is checked before removal from the engine, when the crankshaft can rotate freely in the main...

Main and connecting rod bearings — inspection
1. Used bearings should be kept in place for careful inspection, as wear marks on these parts can help restore the overall condition of the engine (see photo)....

Engine Overhaul — Assembly Procedure
1. The following assembly order is recommended. 1) Crankshaft. 2) Pistons and connecting rods. 3) Oil pump. 4) Balancing mechanism. 5) Main bearing cap frame...

Piston rings — installation
1. Check the gap in the ring joints. 2. Lay out the pistons assembled with the connecting rods and new piston rings in such an order that the set of rings...

Crankshaft — installation and checking clearances in main bearings
Selection of main bearing shells Attention! The manufacturer recommends changing the main bearings every time the engine is disassembled, regardless of their...

Connecting rod and piston group — installation and checking of clearances in connecting rod bearings
Attention! The manufacturer recommends changing the connecting rod bearings every time the engine is disassembled, regardless of their condition. 1. Both...

Engine — Starting after major repairs
1. After completing the engine assembly, double check the oil and coolant levels. Check that the wiring and hoses are connected correctly. 2. Disconnect the...

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