Blocking the EGR Valve

[Chaz]

Question; After reading all the negative comments on here regarding EGR, I find I must ask the question, are all DIESEL powered vehicles today fitted with this system ?
I KNOW, my 2006 ST I 3 liter Patrol IS, I also KNOW my son's 2000 Toyota Prado is also fitted with EGR, I also KNOW my mates Puegot sedan 2004 is also fitted with EGR, therefore the question I have for all posters on here,
IF, EGR is the evil it is claimed to be here, for the long levity of our engines, how come all these other manufacturers vehicles do not suffer from this system as it is alleged our Patrols do ?
There are literly thousands of vehicles inculding large trucks running around with these systems fitted in Australia and Europe, yet it would appear, operate perfectly.
Why the disparigity with Nissan Patrol engines ?
Is it just Nissan Patrols that suffer from this system ? Seems a bit strange if it only applies to Nissan .

The simple answer is that while all modern diesels do operate with some level EGR, the ZD30 uses very high levels. Peugot do have their problems also as do many other manufacturers, but the Nissan ZD30 was designed to be a very clean burning light diesel and it even won an award back in 1999 or 2000 ( I can’t remember exactly when) for being the environmentally cleanest diesel engine to date and this was due to its M-Fire design and extremely high levels of EGR.

If you remove the inlet manifolds or throttle bodies from any light diesel engines you will see similar results, but in most cases the carbon build up is dry which results in less accumulation. Therefore while it’s still corrosive, it doesn’t block the intake manifold runners as severely. In our case with much higher levels of EGR and excessive oil contamination due to a poor crankcase ventilation system, the wet or greasy buildup is much more excessive causing uneven intake air distribution, resulting in uneven fuel mixtures and we all know the result of that.