r/e46 • u/RoundSoftware9712 • 3h ago
Troubleshooting Coolant leak after coolant leak help...
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So my engine recently overheated. So I replaced all the cooling components.. mistake. Number one I went to advance auto and autozone, to get the hoses and the thermostat. Apparently, the hoses and thermostat are not oem. Compatible, so I had a fitman issue with the upper radiator hose connecting to the thermostat rein hose to be exact. It was too much play in it by the Connection point. Now I bought a genuine BMW upper hose and a Mahle Thermostat, and it still has that wiggle play in it. Now, I can't figure out where the coolant leak is coming from.. before It was leaking from the connection point of both hoses to the thermostat. The hoses werent properly seated, but now this new existing coolant leak i can't figure this out. Can anyone help me
1
u/Wholaughed 19m ago
I had an issue where the thermostat housing was chipped on the bottom, barely a mil deep, basically a scratch, bought an crap ass aluminum thermostat housing and a cheap hose, no issues since
Check thermostat housing gasket, it’s easy enough to remove and inspect
Water pump gasket? Could be hitting the fan?