Ford Fiesta - Ecboost water reservoir bubbling - Dave 68
I recently purchased a new fiesta (not very latest new model ) with an ecoboost petrol 1.0 100 engine.

After returning from a drive in town today I lifted the bonnet and saw that the water in the coolant reservoir was bubbling and the fan was running. After a minute or so the fan stopped and also the bubbling stopped.

Is this normal in a turbo engine. I have never had one before.
Ford Fiesta - Ecboost water reservoir bubbling - elekie&a/c doctor
It may or may not be a problem.I would suggest you check coolant level with engine cold to make sure the level is correct.
Ford Fiesta - Ecboost water reservoir bubbling - Dave 68
Thanks, I will do and report back.
Ford Fiesta - Ecboost water reservoir bubbling - Dave 68
Water level normal when cold.
Ford Fiesta - Ecboost water reservoir bubbling - elekie&a/c doctor
Not too familiar with the set up on these.Is the coolant pressure cap screwed down tight?
Ford Fiesta - Ecboost water reservoir bubbling - KenC

All these Eco boost engines run hotter than the older 4 cylinder non turbo Ford Engine, I have never seen an eco boost Fiesta WITHOUT the cooling fan running. So keep a close eye on the coolant level and look carefully for any leaks both inside the engine compartment and on the ground after parking ( however expect condensation from the air conditioning which often forms a small puddle).

If you suspect the bubbles in the Coolant tank are not normal you could ask a garage to test the coolant I believe they can detect a chemical in the coolant which might indicate a leak in the cylinder head gasket.

If you bought the car from a car dealer take it back there as soon as practicable, also you could get the opinion of an independant qualified mechanic who is familier with this engine.

Ford Fiesta - Ecboost water reservoir bubbling - Dave 68
Thank you for your reply. I shall follow your advice.
 

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