Bmw E46 Water Pump Leak

Start your testing with a cool engine.

Bmw e46 water pump leak.

Since the pump shares the same pulley that spins the engine s cooling fan there is an issue that every mechanic must face when performing an e46 water pump replacement. Removing the cooling fan clutch nut from the water pump. E46 models develop coolant leaks toward the front of the engine in places like the radiator outlet sensor water pump and thermostat. E46 waterpump failure coolant leaks from the weeping hole.

If you do not find the leak warm the engine with the pressure tester installed. As mentioned above the bmw e46 water pump is located on the front of the engine below the thermostat housing and is driven by a pulley on the main accessory belt. If the liquid is blue in color it s quite possible that you have a coolant leak. Coolant leak underneath intake manifold.

If you notice leaking liquid coming from the front part of your car you should always pay attention to it as it may be a symptom of problems yet to come. I have seen this problem cause a water leak many times on all different bmw models including e46 3 series e39 5 series and e38 7 series as well as newer mo. 1999 bmw 328i 5 speed 250 000 miles. Consult a bmw professional right away so he or she can help determine the cause and severity of your leak.

At times leaks will surface as parts expand from engine heat.