2000 P1 V70. Bad starting. After wrestling with the air intake nozzle the goes from the front slam panel to the air filter, I didn't realise it was in 2 pieces, I inadvertently dislodged the vac house underneath. I also had a split elbow that mates the thin vac hose to the back of the filter box. Fixed that one but was still unaware the the other one had come off. Both hoses are adjacent to each other on the inlet manifold. It gave me a lot of grief when starting and would hunt up and down at tick over. Would still drive just about. scanned it with Vida which told me it was running lean but the computer would repeatedly correct for that hence the hunting. Eventually found the the bigger pipe was off under the intake nozzle. Popped it back on and all was again right with the running and starting. It's often just the little things that are sent to try us. I do need to replace the the larger hose, 6mm I think, as it has started to vacuum itself flat!