6-cylinder car engines Mazda 626 (6)

Technical data of the six-cylinder engine
Engine Cylinder diameter - 84.58 mm Stroke - 74.17 mm Displacement - 2494 cm 3 (2.5 liters) Cylinder numbering (from the toothed belt) Rear block - 1-3-5 Front block -...

General information about the repair of a six-cylinder engine
This chapter describes procedures for repairing a V-engine without removing it from the vehicle. Information on removing and installing the engine, as well as repairing...

Repair operations performed without removing the engine
Many major engine repairs can be performed without removing the engine from the vehicle. Before performing work, wash the engine compartment and car body with a special...

Set piston #1 to top dead center (TDC)
Note. The following procedure assumes that the ignition distributor is installed correctly. If you need to set TDC to install a distributor, the piston position can be...

Cylinder head covers — removal and installation
Removing 1. Disconnect the negative cable from the battery. Warning! If your vehicle has an anti-theft audio system, make sure you have the unlock code before...

Springs and valve stem seals — replacement
Note 1: Broken springs and valve stem seals can be replaced without removing the cylinder head from the engine. This operation will require a few special tools, as well...

Timing belt and sprockets — removal, inspection and installation
Removing 1. Disconnect the negative cable from the battery. Warning. If your vehicle has an anti-theft audio system, make sure you have the unlock code before...

Camshafts and tappets — removal and installation
Removing 1. Remove cylinder head covers ( see paragraph 4 ), toothed belt and camshaft sprockets (paragraph 6). If you intend to remove the front block camshafts, on...

Intake manifold — removal and installation
Removing 1. Relieve pressure in the fuel system ( see chapter 4 ). Disconnect the negative cable from the battery. Warning. If your vehicle is equipped with an...

Exhaust manifolds — removal and installation
Attention! Allow the engine to cool before starting this operation. Removing 1. Disconnect the negative cable from the battery. Warning. If your car has an anti-theft...

Cylinder heads — removal and installation
Removing 1. Disconnect the negative cable from the battery. Caution, If your vehicle has an anti-theft audio system, make sure you have the unlock code before...

Front crankshaft seal — replacement
Note. The manufacturer recommends replacing this seal after removing the oil pump. In this case, the old cuff can be knocked out from the back of the pump housing, and...

Oil pan — removal and installation
Removing 1. Disconnect the negative cable from the battery. Warning. If your vehicle has an anti-theft audio system, make sure you have the unlock code before...

Oil pump — removal, inspection and installation
Removing 1. Remove the oil pan ( see paragraph 12 ). 2. Remove the toothed belt and crankshaft sprocket ( see paragraph 6 ). 3. Remove the oil intake pipe of the oil...

Flywheel / faceplate — removal and installation
The procedure for removing and installing the flywheel/faceplate is described in chapter 2A , but the bolts must be tightened to the torque specified in Technical data...

Rear crankshaft seal — replacement
1. To perform this work, you must remove the transmission ( see chapter 7 ). 2. Remove the flywheel (faceplate) ( see paragraph 14 ). 3. Cut around the circumference of...

Power block supports — check and replacement
Examination 1. When checking, the engine should be slightly raised to remove the load from its supports. 2. Raise the vehicle and place it on jack stands. Place a...