2.0L gasoline engines Mazda 626 (5)
The engine block is cast iron, the removable cylinder head is cast aluminum alloy. The camshaft is mounted on the cylinder head, the force is transferred to the valves through rocker arms located on a common shaft.
This section describes repair procedures without removing the engine from the vehicle. Therefore, when engine overhaul procedures are considered, in the event that the engine is removed from the car, or it is being tested on the bench, many of the described operations will not be applicable.
Specifications
Cylinder diameter 82 mm piston stroke 90 mm Volume 2.0 liters Cylinder numbering (from timing belt to gearbox) 1–2–3–4 Cylinder sequence 1–3–4–2 The maximum allowable...
Cylinder diameter 82 mm piston stroke 90 mm Volume 2.0 liters Cylinder numbering (from timing belt to gearbox) 1–2–3–4 Cylinder sequence 1–3–4–2 The maximum allowable...
Top dead center (TDC)
Top dead center is the highest point each piston reaches while the engine is running. Usually, TDC is taken to be the highest point reached by piston N1 at the time of...
Top dead center is the highest point each piston reaches while the engine is running. Usually, TDC is taken to be the highest point reached by piston N1 at the time of...
Cylinder head cover — removal and installation
Removing 1. Disconnect the negative battery cable. 2. Disconnect the crankcase ventilation valve hose and ventilation hoses from the head cover. 3. Tag the spark plug...
Removing 1. Disconnect the negative battery cable. 2. Disconnect the crankcase ventilation valve hose and ventilation hoses from the head cover. 3. Tag the spark plug...
Springs, retainers and valve seals
Valve elements A - Valve B - Valve stem seal C - Valve spring D - Spring plate E - Clips Replacement 1. Remove the camshaft. Get pushers of faulty valves. 2. Unscrew the...
Valve elements A - Valve B - Valve stem seal C - Valve spring D - Spring plate E - Clips Replacement 1. Remove the camshaft. Get pushers of faulty valves. 2. Unscrew the...
Timing belt and sprockets
Wear and damage to the timing belt 1. Stratification 2. Missing prong 3. Worn surface 4. Rounded side Removing 1. Disconnect the negative battery cable. 2. Remove the...
Wear and damage to the timing belt 1. Stratification 2. Missing prong 3. Worn surface 4. Rounded side Removing 1. Disconnect the negative battery cable. 2. Remove the...
Camshafts and tappets — removal and installation
Removing Bolt tightening sequence 1. Remove the cylinder head cover. 2. Remove the ignition distributor. 3. Remove the timing belt and camshaft sprockets. 4. Measure the...
Removing Bolt tightening sequence 1. Remove the cylinder head cover. 2. Remove the ignition distributor. 3. Remove the timing belt and camshaft sprockets. 4. Measure the...
Intake manifold — removal and installation
Removing 1. Release the pressure in the fuel system. 2. Disconnect the negative battery cable. 3. Drain the coolant. 4. Remove the air intake pipe. Disconnect the...
Removing 1. Release the pressure in the fuel system. 2. Disconnect the negative battery cable. 3. Drain the coolant. 4. Remove the air intake pipe. Disconnect the...
Exhaust manifold — removal and installation
Attention! The engine must be cold. Removing 1. Disconnect the negative battery cable. 2. Disconnect the wire from the oxygen sensor. If you are installing a new...
Attention! The engine must be cold. Removing 1. Disconnect the negative battery cable. 2. Disconnect the wire from the oxygen sensor. If you are installing a new...
Cylinder head — removal and installation
Attention! The engine must be completely cool. Removing 1. Release the pressure in the fuel system. 2. Disconnect the negative battery cable. 3. Drain the coolant from...
Attention! The engine must be completely cool. Removing 1. Release the pressure in the fuel system. 2. Disconnect the negative battery cable. 3. Drain the coolant from...
Front crankshaft oil seal
Replacement 1. Disconnect the negative battery cable. 2. Remove the bottom engine cover. 3. Lock the crankshaft and remove the pulley bolt. 4. Remove the crankshaft...
Replacement 1. Disconnect the negative battery cable. 2. Remove the bottom engine cover. 3. Lock the crankshaft and remove the pulley bolt. 4. Remove the crankshaft...
Oil pan — removal and installation
Removing 1. Disconnect the negative battery cable. 2. Raise and secure the front of the vehicle. 3. Remove the bottom engine cover. 4. Drain the engine oil and remove...
Removing 1. Disconnect the negative battery cable. 2. Raise and secure the front of the vehicle. 3. Remove the bottom engine cover. 4. Drain the engine oil and remove...
Oil pump — removal, inspection and installation
Removing 1. Disconnect the negative battery cable. 2. Remove the engine undershield and drive belts. 3. Remove the generator. Remove the air conditioning compressor and...
Removing 1. Disconnect the negative battery cable. 2. Remove the engine undershield and drive belts. 3. Remove the generator. Remove the air conditioning compressor and...
Flywheel or drive plate — removal and installation
Removing 1. Raise and secure the front of the vehicle. Remove the gearbox. 2. If your vehicle has a manual transmission, remove the clutch cover and clutch disc. 3. Note...
Removing 1. Raise and secure the front of the vehicle. Remove the gearbox. 2. If your vehicle has a manual transmission, remove the clutch cover and clutch disc. 3. Note...
Rear crankshaft oil seal
Replacement 1. Remove the gearbox. 2. Remove flywheel. 3. The stuffing box can be removed with a special tool or a screwdriver, but it is safest if you remove the...
Replacement 1. Remove the gearbox. 2. Remove flywheel. 3. The stuffing box can be removed with a special tool or a screwdriver, but it is safest if you remove the...
Engine mounts — check and replace
Examination 1. Raise and secure the front of the vehicle. 2. Inspect rubber mounts for wear and damage and replace if necessary. 3. Check that the support bolts are...
Examination 1. Raise and secure the front of the vehicle. 2. Inspect rubber mounts for wear and damage and replace if necessary. 3. Check that the support bolts are...
This section is available on: russian, bulgarian, belarusian, ukrainian, serbian, croatian, romanian, polish, slovak, hungarian
More sections on repairs of other Mazda models
• Power unit: Petrol engines Mazda Familia 6 (1989-1994)
• Power unit: Petrol engines 2.5 l Mazda CX-5KE (2012-2017)
• Power unit: Petrol engine 1.3 l Mazda 121 (3) (1996-2003)
• Power unit: Petrol engines Mazda Familia 6 (1989-1994)
• Power unit: Petrol engines 2.5 l Mazda CX-5KE (2012-2017)
• Power unit: Petrol engine 1.3 l Mazda 121 (3) (1996-2003)
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- General information
- Introduction to guide
- User manual
- Troubleshooting
- Maintenance
- Power unit
- 4-cylinder engines
- 6-cylinder engines
- Engine overhaul
- Cooling and ventilation
- Power and exhaust systems
- Engine electrics
- Control system
- Transmission
- Mechanical gearbox
- Automatic gearbox
- Clutch and drive shafts
- Chassis
- Brake system
- Car suspension
- Steering
- Body
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- Interior (internal elements)
- Doors, windows and locks
- Electrical equipment
- Equipment and devices
- Electrical circuits
- General information
- User manual
- Maintenance
- Helpful hints
- Power unit
- Petrol engines 1.6 and 1.8
- Petrol engines 2.0
- 2.5 petrol engines
- Overhaul engines 1.6 and 1.8
- Overhaul engines 2.0 and 2.5
- Diesel engine 2.0
- Engine electrics
- Cooling system
- Air conditioner
- Carburetor Nikki 30/34
- Power system (1.6 and 1.8)
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- Control system
- Transmission
- Mechanical gearbox
- Automatic gearbox
- Clutch and axles
- Chassis
- Brake system
- Suspension and wheels
- Steering
- Body
- Exterior (external elements)
- Interior (internal elements)
- Doors and windows
- Electrical equipment
- Equipment and devices
- Electrical circuits
- General information
- User manual
- Maintenance
- Power unit
- Gasoline engine
- Engine overhaul (gasoline)
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- Cooling and heating
- Supply system
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- Emission reduction
- Transmission
- Clutch
- Mechanical gearbox
- Automatic gearbox
- Drive shafts
- Chassis
- Brake system
- Suspension and wheels
- Steering
- Body
- Exterior (external elements)
- Interior (internal elements)
- Electrical equipment
- Equipment and devices
- Power devices
- Electrical circuits
- General information
- User manual
- Maintenance
- Troubleshooting
- Late models
- Power unit
- Engine in car
- Engine overhaul
- Cooling and heating system
- Fuel and exhaust system
- Engine electrical system
- Emission control system
- Transmission
- Mechanical gearbox
- Automatic gearbox
- Clutch and drive shafts
- Chassis
- Brake system
- Suspension and wheels
- Steering
- Body
- Exterior (external elements)
- Interior (internal elements)
- Electrical equipment
- Equipment and devices
- Lighting and lamps
- Electrical circuits
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