My Glanza sprays small droplets of oil on the inside of the bonnet from the boost solenoid next to the engine. If i close this then it wont boost and will think its on low boost. It didnt do this before and has started like a week ago. When i dont boost its ok but when all three lights light up then it sprays alittle. What can be causing this. Its that little tube nextto the cambelt, which is used to put high/low boost on. Why is this doing this now. Onwed the car for three years.