EGR valve location - 57 plated S Max?
EGR valve location - 57 plated S Max?
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Oi_Oi_Savaloy

Original Poster:

2,315 posts

286 months

Monday 2nd April 2012
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Can anyone tell me where the EGR valve is on my S Max?

I don't think it's at the front of the engine - is it on top (slightly at the back on the left hand side - as you look at the engine)?

I want to clean it out but can't do so until I've found the blighter!


chrislusty

105 posts

217 months

Monday 2nd April 2012
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What engine do you have?

Oi_Oi_Savaloy

Original Poster:

2,315 posts

286 months

Monday 2nd April 2012
quotequote all
D'oh!

It's a 1.8 tdci (the lower powered one I think). The engine cover says duratorq but I guess both the 125 and 143 (?) bhp models have that.

BigTom85

1,950 posts

197 months

Tuesday 10th April 2012
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When you take the engine cover off, its at the back of the engine on the drivers side.

Although you won't be taking it off to clean it - exhaust front pipe/cat off, turbo off, manifold off... its a big job on these!

They are also VERY expensive. £480 from Ford. I blanked mine off and its all the better for it.

I have a 125PS 1.8TDCI Galaxy, but its identical to the S-Max under the bonnet.

Oi_Oi_Savaloy

Original Poster:

2,315 posts

286 months

Wednesday 11th April 2012
quotequote all
Got it thanks - is there a way to perhaps just clean it in situ? If you look at it - on the right hand side there are 4 torx screws) that appear to hold part of the valve on to the main body - there's a gasket in between the part and the main body.) If i unscrewed the 4 screws (one of the screws is unsighted) and pulled it apart (have to buy another gasket I guess) could I give it a clean or spray inside or is it pointless?

The large intake pipe that enters from the left is a little mucky on the inside (i've had that off the egr just to clean it and there was an oily residue around the entrance but nothing major).


Oi_Oi_Savaloy

Original Poster:

2,315 posts

286 months

Wednesday 11th April 2012
quotequote all
Also - how did you disconnect the EGR? That'll at least stop the residue from getting any worse inside the EGR.

BigTom85

1,950 posts

197 months

Wednesday 11th April 2012
quotequote all
Oily residue is normal, it will be in all the boost pipework and intercooler. I removed all my pipework and intercooler at 75k to clean it and to be honest it was a waste of time.

Those 4 screws expose the screw gear assembly / EGR actuator. Its sealed from the mucky bits of the EGR, so leave it alone. When I dismantled mine it was spotless.

You simply cannot clean the EGR without removing the inlet manifold. If you are losing sleep over it then by all means give it a go, its only nuts and bolts at the end of the day, but there are lots of gaskets etc that should be replaced when you do the job, plus turbo oil feed pipes etc. I really wouldn't bother unless you are having running issues.

You need to blank the pipe that goes into the back of the valve, its about 30mm-ish in diameter and gold in colour, there are 2 bolts (10mm IIRC) that secure this pipe to the valve. This pipe runs from the exhaust to the EGR valve, this pipe is also the EGR cooler, hence if you look further down the back of the engine you will probably see the coolant feed and return lines going to it also.

Remove the 2 bolts and pull the pipe off of the valve body. Its stiff but as its corrugated it is flexible. Now make a blanking plate to fit, I used some 1mm sheet aluminium I had laying about, just trimmed it so size, and bolted it back up again. I noticed an instant improvement in responsiveness, and a slight mpg increase too, well worth doing.

I may well get a proper blanking plate made up one day, happy to get some prices if you wanted to go halves on two?




BigTom85

1,950 posts

197 months

Wednesday 11th April 2012
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The above is an image looking at the back of the engine. It would clearly be desirable to block the EGR pipe from the exhaust manifold end (No.4), but access isn't great, so I did mine from the valve end (No.2), with no issues whatsoever.

You could take the gasket to a machine shop and get them to knock you a blanking plate up, you could even cut one out of a coke tin if you so desired, although there is a (small) risk that it might disintegrate I suppose...

Oi_Oi_Savaloy

Original Poster:

2,315 posts

286 months

Thursday 12th April 2012
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Yes please Bigtom - get a price for two (lower and upper?). Might as well shut it off top and bottom just in case.

I wont be doing anything to that EGR then for the moment then (plus access is terrible).

And I wont be undoing those torx screws!!


BigTom85

1,950 posts

197 months

Thursday 12th April 2012
quotequote all
Actually, now you mention it, if its blanked top and bottom, you could do away with the EGR cooler pipe altogether, removing a bit of plumbing in the process, and simply join the coolant pipes together... It might even reduce inlet temps for improved mpg, reduced smoke and more power also...

I'll get onto it in the next few weeks.

On the Galaxy you have to remove the scuttle panel to get access, its a few bolts and removing the wiper arms, not hard to do at all but a bit time consuming - not sure of the arrangement on the S-Max though.

Oi_Oi_Savaloy

Original Poster:

2,315 posts

286 months

Thursday 12th April 2012
quotequote all
Not sure about the scuttle but the engine is set well back - might have to access it from below. And yes - you could take out all the egr pipework and just reconnect perhaps? Worth looking into.