It's the one I said!! Breather hose from the front of the block that goes into the inboard side of the airbox towards the rear The resulting hole into the airbox needs blocking before setting the idle co%
1. Open bonnet 2. Locate oil filter housing ( the bit the filter screws onto) 3. The block breather rubber hose sits immediately above and to the left of the oil filter housing. 4. Follow said hose to the left towards the airbox 5. Disconnect hose where it attaches the airbox.