04-29-2024, 05:38 AM | #1 |
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BMW M Sport Coolent leak with no clue
Hi guys, I'm new. I looked high and low for a resolution but none to be found to this day, so I thought I could get some help from this forum. I own a 2018 BMW M Sport which has a coolent leak with no trace. it was pressure tested couple of times but no leak to be found. I found just one post somewhere in Redit I think that said it could be the evaporator. any help on this would be much appreciated and thanks in advance
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04-29-2024, 07:44 AM | #2 |
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You don't mention what model type or engine, but if a pressure test shows no leaks, then you should try replacing the cheapest part: the expansion tank cap (coolant filler cap). That is the only part that is not tested in a pressure test, and they are known to fail.
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04-29-2024, 07:51 AM | #3 | |
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04-29-2024, 07:56 AM | #4 | |
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My BMW dealership charges € 21,50 ($23). |
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04-29-2024, 07:58 AM | #5 |
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04-29-2024, 08:05 AM | #6 | |
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I replaced the cap and Tank, but still I have the problem, I need to fill 0.5 litres of Battery water every week |
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04-29-2024, 08:11 AM | #8 | |
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Maybe a more experienced user can chime in. |
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04-29-2024, 08:31 AM | #9 |
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Put automotive dye in your coolant tank and use UV light to see where it ends up. Few bucks on Amazon. Take off the engine cover and as many plastic covers you can to find the leak.
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04-30-2024, 12:58 AM | #10 |
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Thanks for all your valuable help guys, I will try the things you guys mentioned and post back on findings.
by the way can it be the evaporator ? is there a coolant line to it? |
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