Odd Smell from Car While Driving
Faulty Hose Composition leads to Smelly Audi A4 Quattro wagon Noticed an odd smell from the car, so he stopped at a shop to get it checked out. He was told that the coolant reservoir was cracked and needed to be replaced. Not satisfied with this diagnosis, he later drove to our shop. We performed a pressure test on the reservoir and discovered that the hose between the coolant reservoir and the engine was weeping coolant through the hose material. If the coolant reservoir appears to be leaking, the technician should also check these possible leak sources before replacing the reservoir. May be caused by the coolant hose (1) between coolant reservoir and radiator or the coolant hose (2) between coolant reservoir and engine which may have internal cracks (Image 19-A116). Internal cracks can cause coolant to get inside the coolant hose material and leak from connections to the coolant reservoir (arrows) due to the capillary effect. The following tools (or equivalents) are require...