Thanks for those replies. The soot is oily (wet) and black. The EGR unit appears to be functioning. Still cant eradicate the poor idle when hot. I'll block the EGR temporarily as its an emmission thing by removing and plugging the vacum hose that operates it. Where is the breather...

Hi, My first post after 65,000miles of trouble free driving! I have a few queries: When hot my Manual P38 diesel starts idling like a pig when coming up to junctions, in town stop start driving etc. A quick blip on the throttle fixes it (feels like a cylinder is not firing ) I decided to...