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BMW 3-Series (E90 E92) Forum
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Coolant leak
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Yesterday, 09:49 PM | #1 |
Robot
2020
Rep 2,406
Posts |
Coolant leak
I posted about a month ago how I discovered my relatively new coolant tank doesn't make a nice tight fit with the cap despite swapping caps with my 330i (which does have a tight seal.) I may take advantage of the lifetime warranty and try my luck with another Rein tank.
I also have a small leak from the relatively new Gates upper radiator hose: I get a faint smell of hot coolant outside the car from the drivers side wheel well, or from the area of the raditor by that hose when I open the hood, but not much of a smell from the passenger side. Could these leaks be enough to cause the slow loss of coolant every few months? I last topped off about 3 months ago and just got the low coolant light this morning. I had the under tray off the car and even removed the intercooler to see the bottom of the radiator, and there's no evidence of any leaks anywhere else. Water pump and thermostat area are dry and clean too. I'm thinking of cutting that clamp off and replacing it with a t-bolt hose clamp before replacing the entire hose. |
Yesterday, 10:00 PM | #2 |
Neo-Luddite
3273
Rep 1,662
Posts
Drives: '06 325i, 330i 6MT RWD Sport
Join Date: Nov 2020
Location: NJ
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`I would cut the crimp clamp off and inspect the plastic for cracks or mfgrg defects. Seems unlikely it would be the hose especially if it's new, and the clamp looks tight, doesn't look like it should be leaking on that account.
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Today, 12:23 PM | #3 | |
Robot
2020
Rep 2,406
Posts |
Quote:
I'm still wondering if this leak and the cap could be responsible for the coolant loss. Like I mentioned above, I can really smell it near the drivers side wheel well after driving. My radiator cracked a while ago and sprayed a mess of coolant; I replaced it and rinsed the engine bay thoroughly. I assumed I was smelling residual coolant from that old leak, but it's still present. The engine compartment is clean and dry with no signs of coolant leaks other than the two I mentioned. |
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