Signum egr valve

[Signum150]

Hi just cleaned my egr valve out on an 06 Signum elite at 62000 miles
Found new p/n valve fitted with the solenoid moving free but cleaned any way but the valve was solid with soot and carbon cleaned it all out with small screwdriver and carb cleaner then put a drill on the end and slowly rotated the valve to clean the seats.
On checking the inlet manifold found the hole all blocked with thick soot after much digging found that the big hole only has 2 small slots in it for the gas to get thru.
After cleaning all that out car now drives like new.
Is this amount of soot caused by having a DPF system fitted where it injects on the wrong stroke to allow to burn off?
I have never seen cars soot up the egr valve like these do in 25 years of servicing cars.
One question is how do you know the new fuel injector clips as my eng no is after the change but the clips are like the ones shown on the how to page with yellow locking clips?
Thanks Signum 150

[lesj]

Hi,
The new plugs have blue locking clips

[billt]

Hi just cleaned my egr valve out on an 06 Signum elite at 62000 miles
Found new p/n valve fitted with the solenoid moving free but cleaned any way but the valve was solid with soot and carbon cleaned it all out with small screwdriver and carb cleaner then put a drill on the end and slowly rotated the valve to clean the seats.
On checking the inlet manifold found the hole all blocked with thick soot after much digging found that the big hole only has 2 small slots in it for the gas to get thru.
After cleaning all that out car now drives like new.
Is this amount of soot caused by having a DPF system fitted where it injects on the wrong stroke to allow to burn off?
I have never seen cars soot up the egr valve like these do in 25 years of servicing cars.
One question is how do you know the new fuel injector clips as my eng no is after the change but the clips are like the ones shown on the how to page with yellow locking clips?
Thanks Signum 150

were on he engine does the egr live please regards billt

[the-wizard]

The egr lives on the back top right hand side of the engine shown here as the 120 bhp, but the 150 is in the same location http://www.vectra-c.com/forum/showthread.php?t=101276 , Also you could try fitting the new egr style gasket available from fiat!!, pic below £4.05p plus vat, it wont stop the crap/ crud but it will reduce the amount getting into the manifold. although it will be held more in the egr but you cant have it both ways, you wont get rid of this type of soot build up completely with the cdti because its an old design dirty burner they have tried to make run clean but its a bit crappy.

[billt]

hello is it in the same place on the Stignum 2.2? regards billt

[Signum150]

Hi
Have just done a run and now get 49mpg at 75 mph with 4 adults in the car .
As a check have just removed boost px sensor and found that was just a mass fo junk.
1/2 hour soak in carb cleaner made it like new
Idle is now nice and smooth with no lumpyness like it use to be.
will post again if any better fuel figs come up.

[P3tchy]

After cleaning my EGR valve in a sonic bath for 30 mins, my mpg has gone from 32 to 47, but I do have a heavy right foot.