Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20781
EGR Blanking - A Warning...
Most of us use a steel plate to blank the EGR valves, but there has been discussion about using a 2p piece to blank...
These pictures came from a car that a family member had just bought.
I went to see the car with him, and it was plugged in. As expected on an 05 car, there were EGR valve issues. However, there were no blanking plates visible, and the car drove reasonably well, though the live data showed the valves as stuck at 13% each
The car was brought up the road and left with me, as it needed a bit of work. While doing the cambelts, I decided to blank the valves with some stainless plates I had made up. When the pipes came off, this is what was found...
Click image to enlarge
When the throttle housing was removed from the engine, the coins from both sides fell out...
Click image to enlarge
Here is one side compared to a new coin...
Click image to enlarge
So, if you have blanked your valves with a 1p or 2p coin, I suggest you remove them, and quickly
This could have ended very badly
Member Since: 21 Sep 2013
Location: Wombourne
Posts: 390
26th Sep 2015 8:52 am
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
I've never understood the enthusiasm some have had for sticking in a bit of metal in a pipe in the hope that it stays there. All that eroded steel will have gone somewhere....
Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26744
I have to admit that I first used a 2p bit to get me home from France, when my 2008 D3 broke down. I did it on the advice of my dealer (who I had phoned for advice)
I had the valves replaced on return, but never thought this could happen over time.
Is it heat erosion, or chemical?
26th Sep 2015 9:17 am
armalites
Member Since: 17 Aug 2013
Location: Herefordshire
Posts: 1918
I assumed people put the 2p where it meets the manifold ie where you would put the blanking plate?
I'm guessing there must have been some gas flowing past them for them to erode like that.IID PRO
MSV Extreme
Nanocom One
26th Sep 2015 9:21 am
grahamk
Member Since: 28 Feb 2010
Location: Dumgoyne
Posts: 1473
away to check the 10p coin in my 5 series now!3 Flash Indicators
Clock on Dash
GVIF & Reverse Camera
D4 Bluetooth
EGR's Blanked
26th Sep 2015 9:21 am
CDS Site Sponsor
Member Since: 12 Oct 2009
Location: All over the UK!
Posts: 3330
It's a great emergency, get you home fix, but as Mike has proved, not so great long term
Discovery 3/4 & RRS keys cut and programmed at your home or work
Apple CarPlay/ Android Auto retro fit - see it here
BAS Remaps/ EGR Blanking
Software updates/ enabling
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Would they still be accepted as legal tender? Current: Discovery 3 06MY (55 reg) HSE Auto Zambezi Silver Allisport Fast Road Intercooler, V8 Brakes, Silicone IC Hoses, EGRs Blanked, Remapped, De-Cat pipe, FBHIC
Freelander 2 2007 HSE Manual Tambora Flame
Previous: FL2 56 reg SE Manual Black (written off )
Disco 3 06 reg B7S Manual Rimini Red
Disco 2 TD5 Y reg ES Manual Blue - Chipped
Several Discovery 300 TDis
26th Sep 2015 9:36 am
armalites
Member Since: 17 Aug 2013
Location: Herefordshire
Posts: 1918
grahamk wrote:
away to check the 10p coin in my 5 series now!
It's rare that fixing a Disco is cheaper than other cars but a 5th of the price of a 5 series....IID PRO
MSV Extreme
Nanocom One
26th Sep 2015 9:42 am
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72910
Got the steel plates in mine, any pics/observations of how they have lasted long term?
26th Sep 2015 9:43 am
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
armalites wrote:
I'm guessing there must have been some gas flowing past them for them to erode like that.
Yep, there has to be gas flowing past to erode the steel. The same thing can happen with incorrectly secured blanking plates.
Land Rover - Turning Drivers into Mechanics Since 1948
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Allisport Fast Road Intercooler, V8 Brakes, Silicone IC Hoses, EGRs Blanked, Remapped, De-Cat pipe, FBHIC
)
the 10p egr blank was a 5000th of the cars value
