Quote:
Originally Posted by whiteblue
150.000km
I have no CBU at all. Neither in the EGR valve nor in the intake manifold nor in the ports.
Okay, some CBU in the intake manifold, but as thin as paper. The ports nevertheless are shiny like a golden watch.
Why?
Is it the lack of urea? The whole thing seems to be a US problem as overseas urea system aint featured with the diesel engines
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Yes, this problem seems to be prone to the US diesels. But the thinking here is that it's because of the higher EGR ratios to achieve the emission standards.
In my opinion, a second reason is that we can't drive extended times past 80 mph in order to get some good hot air flow through the intake. I miss the Autobahn....