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Revhead Kev
Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 6355
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Re: Re:
quote: Exywarrior wrote:
Apparently a lot of the EGR issues are related to the high sulphur content of Aussie diesel - European diesel has even lower sulphur levels than ours.
If this is truely the case then I would expect Nissan Australia to be including a strip & clean of the EGR valve in every service to limit the potential for it to be worse. If we get the technology from overseas but not the consumables to support it then the manufacturer should find ways to lessen the financial impact on the customer.
--- Kev X450(c) T30 Guru
03 Titanium Ti T30 Series 1 **MODIFIED**
My Blog
My CarPC Worklog
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2/Apr/2013, 1:35 pm
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Exywarrior
X-TRAIL FANATIC
Date Registered: 10-2011
Location: Darwin, NT
TOTAL POSTS: 325
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Re: Re:
quote: Revhead Kev wrote:
If this is truely the case then I would expect Nissan Australia to be including a strip & clean of the EGR valve in every service to limit the potential for it to be worse. If we get the technology from overseas but not the consumables to support it then the manufacturer should find ways to lessen the financial impact on the customer.
This is exactly what I have suggested to the Nissan dealer mate - I believe a planned maintenance routine needs to go into the maintenance schedule to pull out and clean the EGR valve every 20,000km. I haven't had much traction on this so once the dust settles on my defect rectification I'm going to write to Nissan and suggest this very thing.
Judging from what ToddyH03 has written on this thread regarding EGR valve maintenance it seems that cleaning it is not a particularly difficult evolution - putting it in the service manual would make things much better, I think.
In terms of our fuel quality, the sulphur levels were dropped significantly in 2009 after mandatory changes to standards in Australia, but our diesel is still crap compared to what they get in Europe (apparently).
--- Mark T
2011 Series 4 T31 TL Auto - Twilight, factory towbar, factory mats, tinting, Cooper CS5s, cathodic protection, paint protection, yada yada...and no Provent
X-2099
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2/Apr/2013, 2:41 pm
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nananut
X-TRAIL FANATIC
Date Registered: 12-2011
Location: Kalgoorlie, WA
TOTAL POSTS: 366
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Re:
This morning the dealer in Esperance said the MIL light on my exy was EGR-related and probably a blockage occuring. The service guy said he had seen one other exy with the same problem. He cleared the code for my 400km back to Kal and I will be putting the car into service ASAP.
--- x-2202 (c)
New: 2014 Ranger PX XLS 3.2 Mods
Old: 2011 X-trail T31 TS Series 4 Mods
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2/Apr/2013, 3:22 pm
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Revhead Kev
Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 6355
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Re: EGR Valve Cleaning & EGR Related MIL Error Code
Basically by its very intended action, it will always get carbon buildup, with only the amount being able to be varied.
The EGR valve recirculates exhaust gasses into the intake to lower the NOx emissions.
Diesel exhaust gasses contain soot (carbon).
When the hot exhaust gasses meet the cooler intake air the soot precipitates and deposits on the EGR valve and opening, over time building up to an extent which inhibts the proper operation of the valve.
--- Kev X450(c) T30 Guru
03 Titanium Ti T30 Series 1 **MODIFIED**
My Blog
My CarPC Worklog
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2/Apr/2013, 9:07 pm
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cooch t31
X-TRAIL HOLIC
Date Registered: 06-2008
Location: Blue Mountains, NSW
TOTAL POSTS: 5966
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Re:
Somebody should start thinking of a way of using a blanking plate to block the EGR then, I wouldn't hold my breath for Nissan to do anything about it service wise.
Many Patrol and Navara owners have been using a blanking plate to block the EGR tube before it gets to the EGR valve. Some even drill a small 2mm hole in the plate so it is not completely blocked.
Many owners have had these installed for nearly 10 years without any issues.
Pro's. No clogged EGR valve.
Less black smoke from exhaust.
Slight increase in power, (very slight)
No more error codes.
Cleaner oil.
Con's. Slightly higher exhaust temperature.
--- Tony X-891c
HERE is my D22 Navara
HERE is my old 2008 T31, ST Series1
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3/Apr/2013, 4:59 am
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Toddyh03
X-TRAIL HOLIC
Date Registered: 08-2011
Location: Lalor Park, NSW
TOTAL POSTS: 1663
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Re: EGR Valve Cleaning & EGR Related MIL Error Code
One extra con Tony:
Extra NOX from the exhaust
Still worth considering though. I wonder if this ECU update will make a difference to the EGR issue. If it doesn't then a blanking plate will be worth more investigation I reckon. I would like to be able to monitor the exhaust temps after the mod though.
--- Toddyh X-2048 (c)
New: Challenger
Old: 2010 T31 Diesel modified
My XTrail
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3/Apr/2013, 6:39 am
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Exywarrior
X-TRAIL FANATIC
Date Registered: 10-2011
Location: Darwin, NT
TOTAL POSTS: 325
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Re: Re:
quote: cooch t31 wrote:
Somebody should start thinking of a way of using a blanking plate to block the EGR then, I wouldn't hold my breath for Nissan to do anything about it service wise.
There are actually purpose-made EGR valve blocking plates for the Renault/Nissan M9R engine available on E-bay - they are very easy to search. They are made in the UK so there must be similar EGR issues there as well.
Unfortunately blocking the EGR valve is actually against the law as the car would no longer be compliant with anti-pollution laws. Not to mention it would completely void your Nissan warranty.
Apparently a side effect of blocking off or choking the EGR valve is that the MIL light comes on so it requires a change to the software to ignore the EGR valve alerts.
As Popeclement mentioned, the EGR valve problem is endemic to most Euro4 diesels. My dealer looks after VWs as well and he tells me that the diesel VWs suffer the same problem. This is an issue that needs resolution back at the design level but I wouldn't be holding my breath. In the meantime a routine for regular cleaning of the EGR valve seems a sensible option and it seems to me a no-brainer to have it inserted into the planned maintenance schedule.
Last edited by Exywarrior, 3/Apr/2013, 7:10 am
--- Mark T
2011 Series 4 T31 TL Auto - Twilight, factory towbar, factory mats, tinting, Cooper CS5s, cathodic protection, paint protection, yada yada...and no Provent
X-2099
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3/Apr/2013, 7:00 am
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