My car when starting from cold. It takes abit more winding over and when it starts it puffs out abit of diesel smoke. Now ive parked my car on a bit of a decline the last 2 days and its alot better at starting. Glow plugs and loom replaced a month or two ago (could be a faulty plug) i cant remember what it was like before i replaced them! No fault codes in vcds. Any ideas? Thanks