S-Max 2.5T big problems...
S-Max 2.5T big problems...
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NDT

Original Poster:

1,766 posts

289 months

Wednesday 20th April 2011
quotequote all
S-Max has started to make a nasty noise, a bit like a slipping belt, when warm.
Garage reports that it's almost out of oil. Scary - oil light didn't come on (apparently it has failed).
I don't check it very frequently as it's never burnt oil in the past. More fool me.

Just waiting for the garage to find time to get the sump off and find out how bad the damage is...

Any thoughts?

Justin S

3,658 posts

287 months

Wednesday 20th April 2011
quotequote all
I think you answered your own question.................its your fault for not checking the oil. Oil light on usually indicates its too late, hope that helps..............

Les84

1,052 posts

192 months

Thursday 21st April 2011
quotequote all
Does the noise go when you pull the dipstick out? I know the Focus ST have a problem with the Oil Filter Housing makes a screeching/whistling noise and goes when you pull the stick out.

Les

NDT

Original Poster:

1,766 posts

289 months

Monday 25th April 2011
quotequote all
Justin S said:
I think you answered your own question.................its your fault for not checking the oil. Oil light on usually indicates its too late, hope that helps..............
Wow, that's so helpful.
thanks

neiljohnson

11,298 posts

233 months

Wednesday 27th April 2011
quotequote all
Les84 said:
Does the noise go when you pull the dipstick out? I know the Focus ST have a problem with the Oil Filter Housing makes a screeching/whistling noise and goes when you pull the stick out.

Les
Its an engine breathing issue that causes that & is quite common would be the first thing i would check.

For some reason it seems common on a lot of late cars not only Fords confused

Faust66

2,388 posts

191 months

Wednesday 27th April 2011
quotequote all
OP: any news on this?

Hope it's not too bad for you....

NDT

Original Poster:

1,766 posts

289 months

Friday 13th May 2011
quotequote all
Faust66 said:
OP: any news on this?

Hope it's not too bad for you....
Thanks for the thought.
Slow progress from the garage - a busy, trustworthy local independent...

Still not exactly clear on root cause or extent of damage.

Garage has dropped the sump - low oil and lots of heat-related clag in the oil.
But no visible damage - no bits of swarf, no big end or mains discolouration or the funny smell that dying bearings supposedly make.
They haven't inspected the bearings - as somewhat bizarrely Ford/Volvo say that if you split the rods or mains you have to fit new rods or main bearing lower ladder (it's like a bedplate but isn't).
The rods are fracture split (not uncommon) but I wasn't aware that this meant they can't be rebuilt.

They're getting the oil breather off to check it, but in the process have found the source of the oil leak - there's a load in the cambelt cover - it's obviously leaking there somewhere.

So we don't know what the noise was - the breather being clogged by lots of soot from over-heated oil, the oil filling up the cambelt area, the cambelt, bearings or something else.

anonymous-user

80 months

Friday 13th May 2011
quotequote all
Good luck with it, hope it works out wink

Pkh72

1,517 posts

212 months

Friday 13th May 2011
quotequote all
Dave_ST220 said:
Good luck with it, hope it works out wink
+1

NDT

Original Poster:

1,766 posts

289 months

Saturday 14th May 2011
quotequote all
thanks guys.
Ironically I used to be one of those boring people who checked oil ever few weeks - but stopped because the S-Max just never used any...
Wish it had an oil level sensor like my cheap 2003 Renault does...
N

NDT

Original Poster:

1,766 posts

289 months

Monday 16th May 2011
quotequote all
Looks like one or both of the VCT units has been leaking a lot of oil.
Anyone heard of this before on the Volco 5 cyl engine?

NDT

Original Poster:

1,766 posts

289 months

Monday 6th June 2011
quotequote all
Car is back on the road and (touch wood) all fixed.

Root cause appears to be a blocked breather.
This caused one/both of the VCT pulley units to burst a seal, losing most of the oil into the cambelt cover.
Low oil appears to be the result, not the cause.

anonymous-user

80 months

Monday 6th June 2011
quotequote all
No lasting damage? If not get this weeks lottery ticket!! Lucky........

NDT

Original Poster:

1,766 posts

289 months

Wednesday 8th June 2011
quotequote all
Dave_ST220 said:
No lasting damage? If not get this weeks lottery ticket!! Lucky........
touch wood..
She did about 700 miles last week - most of which was a long run to Cornwall and back.
Hopefully if there was anything bad it would have shown up.
No funny noises and pulls like a train.

NDT

Original Poster:

1,766 posts

289 months

Wednesday 8th June 2011
quotequote all
One bizarre thing though....

Mechanic thought that the oil pressure switch had failed - because he never saw an oil pressure light on the dash.
He ordered one from Ford but couldn't find anywhere to fit it - and Ford technical couldn't explain where to put it either.
When I read the manual it say that the 2.5T doesn't have an oil pressure light!!! (note all the other S-Max variants do).

Which is strange....

But it does have a sensor attached to the bottom of the sump which I'm guessing is either oil level (in which case it either doesn't work or is isn't used in the Ford installation of this engine) or oil quality (viscosity I guess) - again, this would make sense if on variable servicing, which isn't an option for the S-Max. Either way, it didn't flag up a situation where oil was low and of very poor quality.

Roop

6,018 posts

310 months

Wednesday 8th June 2011
quotequote all
Glad this panned out okay for you in the end. I have got two of these engines (Kuga 2.5T and Focus RS) and shall now be religiously checking the oil level weekly...

NDT

Original Poster:

1,766 posts

289 months

Wednesday 8th June 2011
quotequote all
Roop said:
Glad this panned out okay for you in the end. I have got two of these engines (Kuga 2.5T and Focus RS) and shall now be religiously checking the oil level weekly...
At first I beat myself up about not checking the oil.
Not sure it would really have made much difference - until the seal went on the VCT I doubt she would have consumed much; when it blew I think the loss would have been very quick.

Roop

6,018 posts

310 months

Thursday 9th June 2011
quotequote all
NDT said:
Roop said:
Glad this panned out okay for you in the end. I have got two of these engines (Kuga 2.5T and Focus RS) and shall now be religiously checking the oil level weekly...
At first I beat myself up about not checking the oil.
Not sure it would really have made much difference - until the seal went on the VCT I doubt she would have consumed much; when it blew I think the loss would have been very quick.
Was it dropping any...?

NDT

Original Poster:

1,766 posts

289 months

Thursday 9th June 2011
quotequote all
Roop said:
Was it dropping any...?
Not a bit.

spike ST500

1,295 posts

181 months

Thursday 9th June 2011
quotequote all
Roop said:
Glad this panned out okay for you in the end. I have got two of these engines (Kuga 2.5T and Focus RS) and shall now be religiously checking the oil level weekly...
At least the RS has the oil pressure gauge, on its central cluster, so unusual indications on that may show an issue.