Jamal bhai, earnestly speaking, I am not at all an expert at engine mechanics, so never try experimenting with any part. Although, at close look, it feels there isn’t any spring attached with that white thing, yet the best idea would be to take it to your dealership and ask them to get it fixed in front of you. You may then ask them to allow you to inspect the fitting position of the same white thing in another Wagon R for personal satisfaction.