Nissan Primera P12 DCI Cleaning EGR valve? - Nissan Primera Owners Club

Ok well I didnt go as far as removing the whole EGR valve as that involves new gaskets I think plus undoing a few bolts that were so tight I nearly rounded one off with a torque wrench! Need a proper hex socket rather than the spline ones. I will update this thread when I get the chance to fully remove it...

Engine off. EGR valve unplugged. Undo the 4 screw on the top of the valve (you'll where it's located in the next two pics):
Pic.1

Pic.2

When you lift off the top plastic motor that controls the valve this is what you'll see:
Pic.3

Then when you take off the metal block it's this:
Pic.4

Basically what I did was get a cloth and lots of clutch cleaner and sprayed it everywhere in the valve. Puching the valve up and down via the circle of metal on a spring in the last pic there. Be carefull when reassembling that the metal hooks (pic.3) fix correctly over the disc in pic.4.

Inlet Manifold Cleaning & underside of EGR valve

The way to get to the underside without removing the whole thing is to use Wynns Aerosol EGR cleaner. It cleans the inside of the intake manifold too which can get very caked up with soot and gunk from the exhuast getting pumped through.

Here's what it can look like without cleaning Shocked

and I'd imagine the EGR valve can get equally caked up. To use the spray download the instructions on Wynns website. Aerosol cans go for about £6 and are well worth it.

fantastic! Thank you very much indeed!

veay good sofe but i have primera p11 20L sport is not good for MPG can u help

jimbo m

Hi i have a p12 2.2dci 2004 model cleaned my egr valve put it back together went for a drive engine management light came on like its went to limp mode any ideas . Had lack of power before done suction control valve last year fuel filter was changed last sept with a service

Got a hold of a machine says its the maf always had a idling problem with the car done the earth rear lights and gearbox when i done the fuel filter last time it was full of black sludge cheers timeshock

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screem_rus Members Profile Send Private Message Find Members Posts Add to Buddy List NPOC Guest Joined: 16 Oct 2009 Online Status: Points: 20	Post Options Post Reply Quote screem_rus Report Post Thanks(0) Quote Reply Topic: Nissan Primera P12 DCI Cleaning EGR valve? Posted: 04 Nov 2009 at 2:47pm
	Please short instruction from those you know or did it before////

edk_N16 Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List NPOC Guest Edwardo Del Dervo Joined: 04 Jun 2008 Location: Hampshire Online Status: Points: 4554	Post Options Post Reply Quote edk_N16 Report Post Thanks(0) Quote Reply Posted: 04 Nov 2009 at 3:11pm
	Ok well I didnt go as far as removing the whole EGR valve as that involves new gaskets I think plus undoing a few bolts that were so tight I nearly rounded one off with a torque wrench! Need a proper hex socket rather than the spline ones. I will update this thread when I get the chance to fully remove it... Engine off. EGR valve unplugged. Undo the 4 screw on the top of the valve (you'll where it's located in the next two pics): Pic.1 Pic.2 When you lift off the top plastic motor that controls the valve this is what you'll see: Pic.3 Then when you take off the metal block it's this: Pic.4 Basically what I did was get a cloth and lots of clutch cleaner and sprayed it everywhere in the valve. Puching the valve up and down via the circle of metal on a spring in the last pic there. Be carefull when reassembling that the metal hooks (pic.3) fix correctly over the disc in pic.4. Inlet Manifold Cleaning & underside of EGR valve The way to get to the underside without removing the whole thing is to use Wynns Aerosol EGR cleaner. It cleans the inside of the intake manifold too which can get very caked up with soot and gunk from the exhuast getting pumped through. Here's what it can look like without cleaning and I'd imagine the EGR valve can get equally caked up. To use the spray download the instructions on Wynns website. Aerosol cans go for about £6 and are well worth it.


renrut Members Profile Send Private Message Find Members Posts Add to Buddy List NPOC Guest Joined: 20 May 2007 Location: St Helens Online Status: Points: 2202	Post Options Post Reply Quote renrut Report Post Thanks(0) Quote Reply Posted: 06 Nov 2009 at 12:30pm
	Nice guide that. And its nice to see what the intake manifold looks like, didnt realise that the 2 runners were different shapes! Like the oil catch tank too, has that helped keep the intake cleaner than before? Think something important to point out is that for the P12 its in the same place but is covered over by the cowl, to get good access you should remove the cowl first, but you can kind of get to it anyway.
	Now enjoying wafty effortless power.

screem_rus Members Profile Send Private Message Find Members Posts Add to Buddy List NPOC Guest Joined: 16 Oct 2009 Online Status: Points: 20	Post Options Post Reply Quote screem_rus Report Post Thanks(0) Quote Reply Posted: 07 Nov 2009 at 2:21pm
	fantastic! Thank you very much indeed!

edk_N16 Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List NPOC Guest Edwardo Del Dervo Joined: 04 Jun 2008 Location: Hampshire Online Status: Points: 4554	Post Options Post Reply Quote edk_N16 Report Post Thanks(0) Quote Reply Posted: 07 Nov 2009 at 2:39pm
	You're very welcome Cheers Will. Well the oil collected in the tank on my last check suggests it is keeping things clean. I havnt checked the pipes yet though.


jimbo morgan Members Profile Send Private Message Find Members Posts Add to Buddy List NPOC Guest Joined: 17 Jun 2011 Online Status: Points: 5	Post Options Post Reply Quote jimbo morgan Report Post Thanks(0) Quote Reply Posted: 04 Nov 2011 at 9:37pm
	veay good sofe but i have primera p11 20L sport is not good for MPG can u help
	jimbo m

dombi555 Members Profile Send Private Message Find Members Posts Add to Buddy List NPOC Guest Joined: 27 Nov 2011 Online Status: Points: 1	Post Options Post Reply Quote dombi555 Report Post Thanks(0) Quote Reply Posted: 27 Nov 2011 at 10:47am


miggy Members Profile Send Private Message Find Members Posts Add to Buddy List NPOC Guest Joined: 16 Aug 2016 Location: livingston Online Status: Points: 12	Post Options Post Reply Quote miggy Report Post Thanks(0) Quote Reply Posted: 24 Jun 2018 at 5:39pm
	Hi i have a p12 2.2dci 2004 model cleaned my egr valve put it back together went for a drive engine management light came on like its went to limp mode any ideas . Had lack of power before done suction control valve last year fuel filter was changed last sept with a service

timeshock! Members Profile Send Private Message Find Members Posts Add to Buddy List NPOC Guest Joined: 29 Jan 2006 Location: Newcastle Online Status: Points: 14483	Post Options Post Reply Quote timeshock! Report Post Thanks(0) Quote Reply Posted: 27 Jun 2018 at 8:46am
	Have a look in our how to section for the procedure to manually read the error code

miggy Members Profile Send Private Message Find Members Posts Add to Buddy List NPOC Guest Joined: 16 Aug 2016 Location: livingston Online Status: Points: 12	Post Options Post Reply Quote miggy Report Post Thanks(0) Quote Reply Posted: 27 Jun 2018 at 9:37am
	Got a hold of a machine says its the maf always had a idling problem with the car done the earth rear lights and gearbox when i done the fuel filter last time it was full of black sludge cheers timeshock