Blog, BMW, BMW Case Studies, Car Repair and Servicing, Case StudiesBMW Case Study 41: BMW 135i Engine Check – Turbo Air Hose (to Turbo Intercooler) leak Posted on July 1, 2020November 20, 2020 by admin 01 Jul BMW 135i Engine Check: Turbo Air Hose (to Turbo Intercooler) leak. Nick BMW 135i was having an engine check light and needed a car servicing too! The engine check light is on At times even with a BMW original handset, you still need BMW experience to ensure we nail the issue accurately to prevent unnecessary replacement The engine check light is trigger when there is irregular air fuel ratio mixture, hence our experience BMW specialist detected the air leak from one of the turbo air hose. During our full safety check, we also discover the wiper pump bush is faulty too and we get them replaced as well. BMW 135i returned to Nick with a Complimentary car wash and vacuum done admin Titanium Paint Protection on Mazda CX-30 looks Smashing! Titanium Coating Treatment for a Winsome Volkswagen Golf