Water leak coming from back of engine. 1998 BMW 318i 1.9
My son was in the car idleing (with girlfriend) when he suddenly noticed steam coming from under the hood. He got out and found water all over the ground. He called me to help. When I got there we were able to find enough water to fill the radiator only to see it poor out from where the engine meets the transmission. I loosened the radiator cap and carefully drove it home. The temp gauge never passed normal. Today I tried to fill the radiator with water only to have it poor out from the same place at the rear of the engine. All i can see back there is a junction block with 3 water hoses and some electrical connections. But that doesn't look like where it is leaking from. There are other hoses back there but it looks like you would have to remove the engine head to replace them.
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Re: Water leak coming from back of engine. 1998 BMW 318i...
Hi, on these engines they have a plastic elbow at the back of the cylinder head that gat brittle and break inside the head, it may look ok but it would be a good place to start to look for a coolant leak as this is quite common. regards mark.
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check top radiator hose goes to thermostat housing sound like its leaking if your engine leaking from left driver side on top of engine it has to be top radiator thermostat hose leaking.wait until engine cool down replace top radiator hose see if coolant leaking still occur if so you could have radiator leak.
Hi my name is Allen!
The first thing you need to do is check for coolant leaks, I suggest this because you seen steam coming from under the hood. Various places to check would be the radiator, hoses, water pump, heater core, head gaskets, freeze-plugs. Check the level of coolant in the radiator, but only after the engine has had time to cool-down because you could be seriously burnt by removing the cap if it has not cooled.
If the radiator is full then other causes could be; the radiator fan not working properly, the thermostat could be sticking closed, the system could be restricted not allowing coolant flow unless driving vehicle, and the water pump could be defective. These are just a few possible causes!
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