Blown head gasket or cracked head.
Possible that coolant is leaking into combustion chamber and burning off. Does engine act like its missing at idle and smooths out at higher rpms? possible head gasket. I had the same problem i used steelseal.com worth its weight in gold.
A leak.
some general causes: leak in cooling system (including possible blown head gasket) resulting in loss of coolant; defective thermostat
many possible causes, low coolant, worn out coolant, bad thermostat, no circulation (water pump) radiator blockage, pressure loss somewhere
Loss of power and white smoke from the tailpipe typically indicates that coolant is entering the engine's combustion chamber, often due to a blown head gasket, a cracked engine block, or a damaged cylinder head. This coolant vaporizes during combustion, producing white smoke. Additionally, the presence of coolant can lead to reduced engine performance, causing a noticeable loss of power. It's crucial to address these issues promptly to prevent further engine damage.
It is possible that the gasket could leak between cylinders. The overheating and coolant loss would happen if the gasket was failing around the coolant passages.
A loss of engine coolant can be caused by several factors, including leaks in the cooling system, such as damaged hoses, a faulty radiator, or a failing water pump. Additionally, a blown head gasket can allow coolant to escape into the engine or exhaust system. Evaporation can also occur in older systems with inadequate seals. Regular maintenance and inspections can help identify and prevent coolant loss.
Diagnostic Trouble Code (DTC) P1299 indicates an engine overheat condition was detected by the cylinder head temperature (CHT) sensor. An FMEM Strategy called Failsafe Cooling was activated to cool the engine. (Refer to Section 1A, «Electronic Engine Control (EC) System», for more information on Failsafe Cooling Strategy and the cylinder head temperature sensor.) Possible causes: -- Engine cooling system concerns. -- Base engine concerns. -- Low engine coolant level or loss of coolant.
Your Ford Fiesta may be losing coolant due to several reasons, such as a leak in the radiator, hoses, or coolant reservoir. Additionally, a blown head gasket can cause coolant to mix with engine oil or escape into the combustion chamber. It's also possible that the water pump is failing, leading to coolant loss. It's important to address the issue promptly to prevent engine overheating or damage.
White smoke from the exhaust especially at startup. Coolant mixed with the oil. A white foamy substance on the underside of the oil fill cap. Loss of coolant with no apparent leak. Engine overheating with possible miss.
Engine fail safe is on the 4.6 L V8 engine only - ( you have lost your coolant ! ) - find and then repair the cause of your coolant loss
If by water you mean engine coolant, yes. Loss of coolant, antifreeze, is a major cause of overheating.