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.
Technical specifications
Cylinder diameter 82 mm Piston stroke 90 mm Volume 2.0 liters Cylinder numbering (from the timing belt to the gearbox) 1–2–3–4 Cylinder firing sequence 1–3–4–2 Maximum...
Cylinder diameter 82 mm Piston stroke 90 mm Volume 2.0 liters Cylinder numbering (from the timing belt to the gearbox) 1–2–3–4 Cylinder firing sequence 1–3–4–2 Maximum...
Top dead center (TDC)
Top dead center is the highest point that each piston reaches while the engine is running. Typically, TDC is taken to be the highest point reached by piston N1 during...
Top dead center is the highest point that each piston reaches while the engine is running. Typically, TDC is taken to be the highest point reached by piston N1 during...
Cylinder head cover — removal and installation
Removal 1. Disconnect the negative battery cable. 2. Disconnect the PCV valve hose and ventilation hoses from the cylinder head cover. 3. Label the spark plug wires and...
Removal 1. Disconnect the negative battery cable. 2. Disconnect the PCV valve hose and ventilation hoses from the cylinder head cover. 3. Label the spark plug wires and...
Valve springs, retainers and seals
Valve elements A – Valve B – Valve stem seal C – Valve spring D – Spring plate E – Clamps Replacement 1. Remove the camshaft. Remove the valve lifters from the faulty...
Valve elements A – Valve B – Valve stem seal C – Valve spring D – Spring plate E – Clamps Replacement 1. Remove the camshaft. Remove the valve lifters from the faulty...
Timing belt and sprockets
Timing belt wear and damage 1. Stratification 2. Missing tooth 3. The surface is worn out 4. Rounded side Removal 1. Disconnect the negative battery cable. 2. Remove the...
Timing belt wear and damage 1. Stratification 2. Missing tooth 3. The surface is worn out 4. Rounded side Removal 1. Disconnect the negative battery cable. 2. Remove the...
Camshafts and tappets — removal and installation
Removal 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...
Removal 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
Removal 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...
Removal 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
Caution! The engine must be cold. Removal 1. Disconnect the negative battery cable. 2. Disconnect the wire from the oxygen sensor. If you are installing a new manifold,...
Caution! The engine must be cold. Removal 1. Disconnect the negative battery cable. 2. Disconnect the wire from the oxygen sensor. If you are installing a new manifold,...
Cylinder head — removal and installation
Caution! The engine must cool down completely. Removal 1. Release the pressure in the fuel system. 2. Disconnect the negative battery cable. 3. Drain the coolant from...
Caution! The engine must cool down completely. Removal 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 lower engine shield. 3. Lock the crankshaft and remove the pulley bolt. 4. Remove the crankshaft...
Replacement 1. Disconnect the negative battery cable. 2. Remove the lower engine shield. 3. Lock the crankshaft and remove the pulley bolt. 4. Remove the crankshaft...
Oil pan — removal and installation
Removal 1. Disconnect the negative battery cable. 2. Raise and support the front of the vehicle. 3. Remove the lower engine shield. 4. Drain the engine oil and remove...
Removal 1. Disconnect the negative battery cable. 2. Raise and support the front of the vehicle. 3. Remove the lower engine shield. 4. Drain the engine oil and remove...
Oil pump — removal, inspection and installation
Removal 1. Disconnect the negative battery cable. 2. Remove the lower engine shield and drive belts. 3. Remove the generator. Remove the air conditioning compressor and...
Removal 1. Disconnect the negative battery cable. 2. Remove the lower engine shield and drive belts. 3. Remove the generator. Remove the air conditioning compressor and...
Flywheel or drive disc — removal and installation
Removal 1. Raise and support the front of the vehicle. Remove the gearbox. 2. If your vehicle has a manual transmission, remove the clutch cover and clutch disc. 3. Mark...
Removal 1. Raise and support the front of the vehicle. Remove the gearbox. 2. If your vehicle has a manual transmission, remove the clutch cover and clutch disc. 3. Mark...
Rear crankshaft oil seal
Replacement 1. Remove the gearbox. 2. Remove the flywheel. 3. The seal can be removed using a special tool or a screwdriver, but it is safest if you remove the seal...
Replacement 1. Remove the gearbox. 2. Remove the flywheel. 3. The seal can be removed using a special tool or a screwdriver, but it is safest if you remove the seal...
Engine Mounts — inspection and replacement
Examination 1. Raise and support the front of the vehicle. 2. Inspect the rubber shock absorbers on the mounts for wear and damage and replace them if necessary. 3....
Examination 1. Raise and support the front of the vehicle. 2. Inspect the rubber shock absorbers on the mounts for wear and damage and replace them if necessary. 3....
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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