The most common leak points on a fiesta depend on which engine; the old 8 valve lumps tend to seep around the rocker cover & by the drive-shaft seal. Neither is an expensive fix and usually will not empty the sump any faster than about 2 weeks of hard driving so can be added to the next scheduled service
Normally a sign of a coolant leak in the oil cooler. Replace ASAP.
A water leak from the radiator in to the passenger compartment is usually a sign of a leak in the heater core. If the water is not from the radiator then there may be a leak in a window or door seal, or a hole in the undercarriage that is allowing water from the road to soak the carpet..
You can either inject a coloured or UV dye into the lower side service port and then where ever it appears out of is the fault.
your slave may have a leak check your fluid if it is low have your slave looked at very common your slave may have a leak check your fluid if it is low have your slave looked at very common
These are common for oil pan gaskets, if the oil level is a quart low it most likely isn't high enough to leak out the gasket
The only place I've ever seen them leak is at the pan gasket if people have tightened it up incorrectly.
Pressure test cooling system to find leak Could be freeze plug, water pump, thermostat housing, bypass hoses etc.
Where is the leak from? The fuel filler? The fuel tank? A fuel line? Does the leak occur only when the engine is running? Does the leak only occur when the vehicle is parked on an inclined surface?
The most common cause of problems like this is a boost leak. Buy a boost leak tester.
The most common reason for you to lose fuel crime, in your Ford F1 50 pickup truck, is a fuel leak. A faulty fuel pump can also cause the problem.
The most common signs of a bad heater core are; no heat or fluid leaking into the passenger compartment. The heater core can have a leak or it can be plugged.
The most common things would be a plugged fuel filter or a vacuum leak.