Any help appreciated, this vehicle came in with loss of power. No faults codes stored, emissions normal. Starts from cold and runs normally at first then begins surging as the engine warms up.Have checked the ect, O2 sensor, valve timing. Also put fresh fuel in the tank, changed the filter and checked fuel pressure.This engine doesnt seem to have an EGR valve.Need to check out the Map and exhaust system tommorrow.Just wondering if anyone has had similar experience,cheers Dave.