I was wondering if anyone could help me I have a 2003 3.0l Turbo Diesel Nissan Navara dual cab that has just the head machined and refitted as was overheating due to radiator blockage. After vehicle put back together would not start so garage jump started it and now starts fine. But when you drive the vehicle has no guts or power and is so sluggish would take a long time to get to 100km in it and this problem was not there before the head refitted. Vehicle has been to 3 separate garages and the turbo has been dismantled and put back together, injectors and injector pump tested and all tested fine, new ecu fitted ,fuel hose has been taken off and diesel put in bucket to check no blockages. Vehicle has also been into Nissan and they have no answers either. Can anyone please help ????? Thanks