| Description and Operation | 1 | EI coils | | 2 | Temperature gauge sender unit | | 3 | Engine coolant temperature (ECT) sensor | | 4 | Throttle position (TP) sensor | | 5 | Idle speed control (ISC) valve | | 6 | Oil pressure switch | | 7 | Crankshaft position (CKP) sensor | | 8 | Central connector | | 9 | Injectors | | 10 | Camshaft position (CMP) sensor | | 1 | DPFE sensor | | 2 | Vacuum switching valve | | 3 | Vacuum regulator | Exhaust gas recirculation on the Transit fitted with the DOHC engine is controlled by an electronic differential pressure feedback EGR (DPFE) system. The differential pressure at a restriction in the EGR pipe is measured by the DPFE sensor and passed to the EEC V module as a voltage signal. Depending on this voltage signal, the EEC V module modifies the signal sent to the electronic vacuum regulator, which then controls the vacuum to the EGR valve. In this way a precisely measured quantity of exhaust gas passes into the inlet manifold behind the throttle valve. The vacuum for the EGR system and the auxiliary air system is taken from a common line. The vacuum switching valve directs vacuum to the secondary air valve when the engine is cold, and to the EGR system when the engine is warm. The vacuum switching valve is controlled by the EEC V module. | 1 | Coolant shut‐off valve | | 2 | Fuel pressure regulator | | 3 | Throttle housing | | 4 | Connection to heater valve system | | 5 | Evaporative emission control system valve (EVAP) | | 6 | Connection to brake servo | | 7 | Solenoid valve | | 8 | Idle speed control valve (ISC) | Coolant shut‐off valve - On vehicles with air conditioning the coolant supply to the heater radiator is shut off when the air conditioning is operating.
- As on the diesel engine, the system operates by vacuum which is passed to the coolant shut‐off valve by a solenoid valve. The vacuum is supplied by the line to the brake servo.
- The solenoid is controlled by the EEC V module.
| 1 | Evaporative emission control system valve (EVAP) | | 2 | Vacuum switching valve | | 3 | EGR system vacuum regulator (CVT) | | 4 | DPFE sensor (differential pressure feedback EGR) | | 5 | Secondary pump of auxiliary air system | | 6 | Secondary air valve | | 7 | EGR valve | | 8 | Fuel pressure regulator | | 9 | Connection to heater valve system | Auxiliary air system. - While the engine is warming up, fresh air is introduced into the exhaust manifold to burn some of the CO and hydrocarbon content of the exhaust gas.
- 1 Secondary air injection pump
- 2 Secondary air injection valve
| 1 | Crankshaft belt pulley | | 2 | Automatic belt tensioner | | 3 | Alternator | | 4 | Coolant pump | | 5 | Power steering pump | | 6 | Alternator for additional heater | | 7 | Air conditioning compressor | Locations of the angles on the valve seat. | | 1. Locations of the angles on the valve seat. 1. Upper correction angle. 2. Valve seat angle. 3. Lower correction angle. 4. Valve seat width. | Modified parts from MY '95 onwards | | 2. Connecting rods • In place of the existing oil splash bore, there is now a recess on each side of the connecting rod. • This recess conveys the oil from the bearing shells to the cylinder bore. • This provides additional lubrication on the pressurised side of the cylinder bore. • New connecting rod bolts marked "KX120" on the head. | | | 3. Pistons • The distance from the piston crown to the first piston ring is reduced to 5 mm. • The piston rings are phosphated. • The tolerances have been reduced. | | | 4. Cylinder head gasket. With effect from the '95 model year, a multi‐layered steel gasket is used. | | | 5. Inlet manifold gasket. • Four Viton gaskets arranged in the inlet manifold. • The four gaskets are not symmetrical. | | | 6. Exhaust manifold gasket • A two layer steel gasket was introduced from '95 MY. • Two gaskets per engine. | Gasket for inlet manifold coolant connector. Different gaskets are used on the DOHC 8V engine, depending on the vehicle in which the engine is fitted. | 1 | Gasket with narrow tab for longitudinal engine installation in the Granada/Scorpio '95 and Transit. | | 2 | Gasket with broad tab for transverse engine installation. | - The gasket for use on transversely installed engines is closed because the coolant connection is located at the rear of the cylinder head.
- The gasket identifying tab is visible under the inlet manifold.
| 1 | Yellow line for standard size (54,99 ‐ 54,98) main bearing journals, red line for standard size (55,00 ‐ 54,99) main bearing journals. | | 2 | Green line for production undersize (0,25) main bearing journals. | | 3 | Green line for production undersize (0,25) big‐end bearing journals. | | 4 | Yellow line for undersize (0,38) centre main bearing journal width. | | 5 | Centre main bearing journal width | |
