Removing the oil pan for service on your Ford Focus is a straightforward process. Depending on your particular model, however, you might need to remove one or more components to gain complete access to the pan. After that, when you are ready for reinstallation, make sure the pan and engine gasket mating surfaces are completely clean and follow a crisscross pattern to tighten the bolts without over-tightening to avoid oil leaks.
2.0L Engine with SOHC
First, make sure the engine and exhaust system are cool enough to the touch, since you will have to remove the catalytic converter. After raising the front of your vehicle, drain the oil and disconnect the ground (black) battery cable.
Using a six-point socket, ratchet extension and ratchet, remove the three-way catalytic converter. Then detach the axle shaft clamp and the brackets for the intake manifold and axle shaft. Unbolt the coolant pipe bolt as well. Then proceed to remove the oil pan.
When you are ready to install the oil pan, wash the pan in cold soak cleaner and thoroughly clean the engine gasket-mating surface. Then apply silicone sealant to the oil pump and rear seal retainer joints to prevent oil leaks.
Start the mounting bolts by hand and tighten them gradually following a crisscross pattern. However, be careful not to over-tighten the bolts to prevent damage to the pan flange and gasket, which may lead to oil leaks.
2.0L Engine with DOHC
On the 2.0L engine model with dual overhead camshaft, taking off the pan requires removal of the catalytic converter as well after draining the engine oil and detaching the ground battery cable.
When installing the pan, thoroughly clean the engine and pan gasket-mating surfaces. Then apply a bead of silicone gasket sealer to the oil pan flange. Once you apply the silicone, you have 10 minutes to install the pan to make sure the chemical seals properly.
Start the pan mounting bolts by hand and tighten them gradually following a star pattern.
For the 2.3L engine model, you will have to remove the oil level dipstick and tube after draining the oil. This model has a wiring harness attached to one side of the oil pan. After detaching the harness, unbolt the studs and nuts on the right side (passenger side) of the pan. Then unscrew the pan-to-bell housing (transmission) bolts. Finally, remove the rest of the oil pan mounting bolts.
Before installing the pan, thoroughly clean the engine and pan gasket-mating surfaces. Then apply a 2.5-mm bead of silicone gasket and sealant to the oil pan flange. Set the pan in place and start by hand the pan-to-bell housing bolts, studs and nuts on the right side and the rest of the pan mounting bolts. Gradually tighten the bolts following a crisscross pattern, but do not over tighten the bolts.