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Ford Focus 1.6T Ecoboost Coolant Leak

Ford Focus 1.6T Ecoboost Coolant Leak

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Discussion

Teebs

Original Poster:

1,608 posts

141 months

Wednesday 13th September 2017
quotequote all
Hi all

61 plate, 1.6T Ecoboost, done 61k.

Started with coolant leaking after being run for a while, topped back up and no leaks appear.

A search suggests the Thermostat housing needs replacing. Does anyone have any experience of the above? Hopefully it's not the same issues that some of the 1.0 Ecoboost engines have suffered

Thanks in advance

GreenV8S

25,123 posts

210 months

Wednesday 13th September 2017
quotequote all
I don't know that engine so I have no idea how common it is to leak at the stat housing, but there are so many ways for the cooling system to leak that I'd prefer to track the leak down before trying to fix it. If the leak is temperature sensitive a cold pressure test might not show it, but that would be the first thing I'd try.

StoatInACoat

1,080 posts

111 months

Thursday 14th September 2017
quotequote all
You should be able to see where it's leaked with a torch and some fiddling. Take any plastic covers off, trace all hoses and look for a powdery white residue on all joints and around the housing/radiator.

Teebs

Original Poster:

1,608 posts

141 months

Thursday 14th September 2017
quotequote all
Thanks all, we're going to get it looked at.


packman10_4

232 posts

120 months

Friday 15th September 2017
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I think im right in saying Ford knows about this problem .... give your stealer sorry dealer a ring and ask the question think there is a recall on some hose or something similar ...
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Teebs

Original Poster:

1,608 posts

141 months

Friday 15th September 2017
quotequote all
packman10_4 said:
I think im right in saying Ford knows about this problem .... give your stealer sorry dealer a ring and ask the question think there is a recall on some hose or something similar ...
Thanks, tried that and they maintained no recalls were outstanding..

LarsG

23 posts

1 month

Monday 1st January
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I recently sold an Ecoboost 1.6 180 estate, on a 62 plate with 34,000 miles on the clock, that I had owned for around three and a half years having bought it with 5000 miles on the clock .

During this time I experienced the coolant level dropping on a regular basis. Over the last two years my average mileage was 5000 a year. I would have to top up the coolant every two months or so or sometimes more frequently, it could drop as low as the minimum level. It seems to drop more on shorter journeys.

Four trips to the Ford dealership while still under warranty, they pressure tested it and could find no problems. There was no gunge in the oil, there were no signs of leaks, the filler cap was new.

I now understand it could be one of two problems, the water pump seeping (no signs of coolant loss) or water crossing into the cylinder heads during cold starts. Apparently the RS can have a similar fault. The design of the cylinder head can allow coolant to cross if the gasket is not perfectly aligned, or has warped slightly or is imperfect. A modified cylinder head gasket can remedy the problem.

On cold mornings you will get exhaust steam, this is normal, So it is not as apparent that the white steam continues longer than it should. Of course once the engine is warm and expands the leakage stops... until the next cold start.

While Ford are aware of this problem with the RS and now fit a modified gasket, so few 1.6 180s were sold Ford are 'unaware' of the problem with this particular engine.

I sold the car in December, it was reliable but the leak remained. That could be the problem.

Teebs

Original Poster:

1,608 posts

141 months

Wednesday 3rd January
quotequote all
Thanks for that. It's been fine ever since the original issue, Coolant has been checked on a weekly basis and hasn't dropped a ml since it was topped up.

We've had the car for 3 years now and it's been a Superb little run-around. We've only needed to service it & fit rear brake pads during that time.

cornershop

855 posts

122 months

Saturday 10th February
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Hi - wondering if you found a fix for this?

My partner noticed the heater wasn’t working in our 62 plate 1.6T ecoboost over the past few days. Had a look today and the coolant was way below minimum., just 10-15 mm at the bottom of the expansion tank. Added 500ml of Ford coolant for a trip to Guildford Ford and back to get some more, just checked coolant level and it’s back where it was this morning before top up. confused

Engine temps didn’t go past midway point (just below).

GreenV8S

25,123 posts

210 months

Saturday 10th February
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cornershop said:
Engine temps didn’t go past midway point (just below).
I expect you'll find that the actual engine temps were way above normal and you're increasing the risk of engine damage every minute you run it like this - just that the sender for the gauge is no longer seeing coolant flow.

LarsG

23 posts

1 month

Tuesday 13th February
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cornershop said:
Hi - wondering if you found a fix for this?

My partner noticed the heater wasn’t working in our 62 plate 1.6T ecoboost over the past few days. Had a look today and the coolant was way below minimum., just 10-15 mm at the bottom of the expansion tank. Added 500ml of Ford coolant for a trip to Guildford Ford and back to get some more, just checked coolant level and it’s back where it was this morning before top up. confused

Engine temps didn’t go past midway point (just below).
Check to see if your car Is subject to the new recall of Focus, Kuga and Fiesta ST built between 2010-2014, over cooling issues. https://www.dft.gov.uk/vosa/apps/recalls/searches/...

The fact that the Fiesta ST has the same engine .....

cornershop

855 posts

122 months

Wednesday 14th February
quotequote all
Thanks for this. I checked against Ford Etis using the reg, and it’s showing as an “oustanding field service action” to check cooling system.

Last weekend Ford advised they cannot see the car until March, so as car is still under warranty, said we could get AA man to check it over.

He couldn’t find a leak but took the expansion cap off, and brought it to temp to allow it to burp. We topped it up and it hasn’t come down since, even after 80miles covered by the Mrs. Although I get a whiff of burnt coolant entering the cabin now and again, so will keep the March appt to get it checked

cornershop

855 posts

122 months