Gasoline engines Z7X car Renault Espace 3

Technical specifications — general information
The six-cylinder petrol engine with a 90° V-shaped arrangement of cylinders is mounted transversely at the front of the car. The valve timing mechanism consists of 2 camshafts mounted above each row of cylinders and...

Z7X Six-Cylinder Petrol Engines — Technical Data
Engine displacement, cm³ — 2963 Cylinder diameter, mm — 93 Piston stroke, mm — 72.7 Compression ratio - 9.6 + 04 Maximum power: CEE (kW at min⁻¹) - 123 at 5000 DIN (hp at min⁻¹) — 170 at 5000 Maximum torque: CEE (kg m...

Z7X Six-Cylinder Petrol Engines — General Information
The engine was developed jointly by Renault, Peugeot and Volvo. The engine is assembled according to the classic scheme, in which the intake manifolds are located on the inside of the cylinder heads, and the exhaust...

Valve clearances and hydraulic lifters
Valve clearances Due to the use of hydraulic tappets (valve clearance compensators) no need to check and adjust valve clearances. Hydraulic tappets Hydraulic tappets are located at the end of the rocker arms and...

Ignition system
The static ignition system increases the amount of energy supplied to the spark plugs by eliminating intermediate elements between the transformer, which consists of three ignition coils with double windings, and the...

Multi-point fuel injection system
The system's features include: 55-channel injection system control unit; static ignition system; injection blocking relay, used only for supplying the engine overheating protection relay; control of the electrical...

Idle speed control valve
The idle air control valve is a solenoid valve with a conventional winding and is designed to regulate the additional air supply to the throttle assembly to maintain the engine crankshaft speed at a level specified for...

Replacing the balance shaft drive chain on the front cylinder head
Fig. 2.4. Balance shaft: 1 - bolt; 2 - stars; 3 - balancers; 4 - support; 5 - balancing shaft; 6 - keys; 7 - chain tensioning mechanism; 8 - chain tensioner; 9 - rocker arm axle mounting bolt Removal Disconnect the...

Intake manifold
Removal Disconnect the cable from the negative battery terminal. Remove 4 screws and remove the top cover of the engine protective casing. Remove the plastic wiring harness retainer on the engine lifting eye. Disconnect...

Front cylinder head exhaust manifold
Fig. 2.6. Location of the absolute pressure sensor tube Removal Disconnect the cable from the negative battery terminal. Loosen the exhaust system inlet pipe clamp (Fig. 2.7). Fig. 2.7. Fastening the exhaust system...

Exhaust manifold rear cylinder head
Removal Disconnect the cable from the negative battery terminal. Loosen the exhaust system inlet pipe clamp ( fig. 2.7 ). Loosen the nuts securing the exhaust system inlet pipe to the front and rear cylinder head...

Replacing the camshaft drive chains
Fig. 2.9. Gas distribution mechanism: 1 - crankshaft sprocket; 2 - camshaft drive chains; 3 - shoe; 4 - chain tensioner shoe; 5 - hydromechanical chain tensioner; 6 - camshaft sprocket; 7 - eccentric; 8 - Automatic...

Front cylinder head
On the engine installed in the vehicle. Only the front cylinder head can be removed. In this case, it is necessary to keep the camshaft drive chains taut. If for any reason the chain tension is loose, it is necessary to...

Rear cylinder head
To remove the rear cylinder head, you must first remove the engine and gearbox from the vehicle. Removal and installation of the rear cylinder head is carried out in the same way as the front head, taking into account...

Cylinder head repair
Fig. 2.28. Using the valve spring compressor Fig. 2.29. Using a special device to install the oil deflector cap Fig. 2.30. Details of the valve installed in the cylinder head: 1 - spring seat; 2 - oil deflector cap; 3 -...

Generator drive belt
Removal Place the vehicle on a two-post lift and disconnect the negative battery cable. Remove: - right front wheel. - mudguard. - protective shields under the engine Loosen the two bolts (A. Fig. 2 31) fastenings of...

Water Pump/A/C Compressor Drive Belt
Removal Remove the alternator drive belt. Relax: - adjusting bolt ( E. Fig. 2.31 ) Water pump/air conditioning compressor drive belt; - the lock nut of the adjusting bolt and unscrew it as much as possible; - 2 bolts...

Auxiliary Drive Belt Tension
On a cold engine (ambient temperature) install a new accessory drive belt. Position the Mot. 1273 sensor in the centre of the longest belt section (fig. 2.32. 2.33, 2.34). Fig. 2.32. Location of the auxiliary drive belt...

Throttle assembly
Fig. 2.35. Location of bolts (1) for fastening the throttle assembly Removal Disconnect the cable from the negative battery terminal. Remove 4 screws and remove the top cover of the engine protective casing. Disconnect...

Fuel distribution line
Fig. 2.36. Fuel distribution line: 1 - fuel supply hose with green mark; 2 - return fuel hose with red mark; 3 - front fuel distribution line (cylinders 1-2-3); 4 - rear fuel distribution line (cylinders 4 - 5 - 6); 5 -...

Inertial shock sensor
Fig. 2.37. Location of the inertial impact sensor in the engine compartment In the event of a collision, the inertial impact sensor interrupts the power supply to the fuel pump. To turn the power back on, simply press...

Fuel filter
The fuel filter is located under the bottom of the car, behind the fuel tank and is attached to the side member with a clamp. The fuel filter must be changed every 60,000 km of vehicle mileage See the corresponding...

Checking fuel pressure
Remove 4 screws and remove the top cover of the engine protective casing. Remove the pulsation damper and, using the damper sealing ring, fit tool Mot. 1311 in its place. From the Mot. 1311 set, connect the tube and...

Checking the performance of the fuel pump
The performance of the fuel pump can be checked after disconnecting the fuel line on the right side member. Disconnect the red quick-connect fitting from the fuel return line. Connect a semi-rigid tube with a diameter...

Removal and installation of the Z7X engine with the AD8 gearbox
Removal Removal and installation are carried out on a two- or four-post lift without removing the subframe When removing the power unit, it is necessary to use the following special tools: - centering fork of the...

Engine repair
Fig. 2.50. Cylinder block: 1 - cylinder block; 2 - rear cover of the cylinder block; 3 - rear crankshaft oil seal;4 - main bearing cap; 5 - threaded plug for draining the coolant;6 - centering sleeve; 7 - cylinder...

Checking oil pressure
Checking the oil pressure should be done on a warm engine (-80°C). Connect a pressure gauge instead of the oil pressure sensor (to remove the sensor, use a 22mm high socket head). Oil pressure values for Z engines: - at...

Oil pump
Note: Removal of the oil pump can only be carried out on the engine removed from the vehicle, as it requires preliminary removal of the timing cover. Removal Remove the engine and gearbox from the vehicle. Drain the...

Oil pump repair
Remove the oil pump. Remove the pin and take out the plug, spring and plunger of the pressure reducing valve. Check the gears and the oil pump seat in the cylinder block for wear and damage. If any part of the oil pump...

Replacing the coolant
Draining the coolant Apart from replacing the coolant at the prescribed intervals, maintenance is limited to checking the coolant level in the expansion tank. Remove the cap from the expansion tank. Place a suitable...

Set of cooling system elements together with a radiator
Removal Removal of the cooling system components kit together with the radiator of the Z7X engine is similar to the procedure for the F3R engine, except for the following differences: the thermal switch is located on...

Water pump
Removal the water pump requires removing the power unit. When installing, replace the rubber gaskets of the various tubes and install very carefully, as the gaskets are very fragile. Removal Place the car on a lift....

Exhaust system — general information
The exhaust system ensures the removal of exhaust gases into the atmosphere. reducing the concentration of pollutants, reducing engine noise to the required level with minimal loss of engine power. In order for the...

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