Evening all :),
Straight to the point, I had my car serviced by an independent mechanic recently who claimed to have cleaned the egr valve and checked my dpf as well as standard, oil change filter etc. Travelling to London I had the VSC light come on and green flag rep came out and using diagnostic equipment suggested egr valve trouble. He proceeded to spray it with some lubricant, to be honest I can not remember, the code cleared and I drove high revs all the way to London (from Manchester) getting around 35mpg.
For the past couple of weeks, driving my car locally it releases a heavy amount of exhaust fumes. To describe I would say greyish white maybe.
Also, although I do not suffer any power loss, I am experiencing some sort of delayed acceleration action, where I will put my foot down, the revs will rise, say from 2000-4000 revs and my car will hesitate a couple seconds and then speed will increase. This all coupled with a now average of 32mpg has me a little worried.
A couple of suggestions have been made, transmission oil, (this was on the american lexus forum) so I am not sure of it being relavent to the diesel, the head gasket but I am not sure how to check this, or clutch.
Anyone experienced the same on their car or any suggestions would be most helpful, I intend on running my car for a few more years yet.
Cheers all :)