P040100. Staus: Intermittent
I have checked the egr pipes as best I can for leaks, no smell, nothing obvious.
Am I right in thinking this could be the valve not opening sufficiently?
If physically blocking/blanking the EGR is a 'good' thing, then why would an insufficiently low flow of egr gas be a bad thing?
What can I do with my OBDeleven to check things like valve opening position etc? Anything else that would indicate that problems elsewhere are being casued? (I see there are wizards on here that can transalte a download of all sorts of 'jibber jabber' into a meaninful diagnosois of what's going on in the engine.)