Engine Mechanical - 1.6L: Maintenance Ford Fiesta Mk6

Lubrication System

The engine lubrication system operates as follows

1. Oil is drawn into the oil pump through the oil pump screen cover and tube in the sump of the oil pan.
2. Oil is pumped through the oil filter on the left front side of the cylinder block and is cooled by an oil cooler.
3. Oil enters the main gallery where it is distributed to the crankshaft main journals and to the cylinder head.
4. From the main journals, the oil is routed through cross-drilled passages in the crankshaft to lubricate the connecting rod bearings. Controlled leakage through the crankshaft main bearings and connecting rod bearings is slung radially outward to cool and lubricate the cylinder walls as well as the entire connecting rod, piston and piston ring assembly.

Refer to ENGINE SYSTEM - GENERAL INFORMATION for basic mechanical concerns or refer to the ENGINE EMISSION CONTROL for driveability concerns.

Scheme 19

Scheme 20

1. Remove the valve cover. For additional information, refer to «VALVE COVER»(ref-382364-S24045576522011012300000) in this information.
2. Remove the 2 bolts and accessory drive belt splash shield. To install, tighten to 9 Nm (80 lb-in).
3. NOTE: Turn the engine clockwise only, and use the crankshaft bolt only. NOTE: Measure each valve's clearance at base circle, with the lobe pointed away from the tappet, before removing the camshafts. Failure to measure all clearances prior to removing the camshafts will necessitate repeated removal and installation and wasted labor time. Use a feeler gauge to measure each valve's clearance and record its location.
4. NOTE: The number on the valve tappet only reflects the digits that follow the decimal. For example, a tappet with the number 0.650 has the thickness of 3.650 mm. NOTE: The nominal clearance is 0.20 mm (0.0079 in) for intake and 0.34 mm (0.0133 in) for exhaust. NOTE: The acceptable clearances after being fully installed is 0.17-0.23 mm (0.007-0.009 in) for intake and 0.31-0.37 mm (0.012-0.015 in) for exhaust. Select tappets using this formula: tappet thickness = measured clearance + the existing tappet thickness - nominal clearance. Select the closest tappet size to the ideal tappet thickness available and mark the installation location.
5. If any tappets do not measure within specifications, install new tappets in these locations. For additional information, refer to «Valve Train Components - Exploded View»(ref-382364-S08889304002011012300000) and «Valve Tappets»(ref-382364-S18122639902011012300000) in this information.

Scheme 21

ITEM DESCRIPTION

Note. If the engine is repaired or replaced because of upper engine failure, typically including valve or piston damage, check the intake manifold for metal debris. If metal debris is found, install a new intake manifold. Failure to follow these instructions can result in engine damage.

1. (Scheme 21) Items in the exploded views may not be listed in order of removal.

Note. In order to ensure the most accurate information, some procedural and pinpoint test steps may be under development and not immediately available at vehicle introduction.

Scheme 22

ITEM DESCRIPTION