Coolant leak

Nel2014 · 06-23-2018, 12:56 PM

I topped up my coolant recently and have noticed a lot of coolant splatter around the tank. Also I noticed that when the cap is fully screwed on it is still quite loose. I added a rubber o-ring around the cap and this has tightened it on closure.
There is no loose / cracked pipes as far as i can see, maybe i need to replace the coolant tank, but im not sure. From the residue it looks like it has sprayed out from somewhere on the tank in very small amounts.
Has any one come across this problem, before I replace the coolant tank and find out its something else?

Car goes on for its recall on monday so looks like this will be my next job..!
I will posts some pics shortly.

Nel2014 · 06-24-2018, 10:12 AM

Here are some photos showing whats happening...

Nel2014 · 06-24-2018, 10:31 AM

Phil325i · 06-24-2018, 10:36 AM

There's been a few cases on the forums of leaking caps. I changed mine about a year ago as a precaution.

Nel2014 · 06-24-2018, 10:43 AM

Yeah I may try that as it was loose used o-ring as temp measure to help tighten it up when closed, think it may be the tank as well tho.
Also noticed this the coolant pipe going into the bulk head has turned white - may have a leak there as well

Nel2014 · 06-25-2018, 12:38 PM

I think im going to try the cap first then replace the tank. The coolant pipe prob needs replacing as well not sure if it is a easy job or not, anyone else had this problem?

06-23-2018, 12:56 PM	#1
Nel2014 Banned 22 Rep 260 Posts Drives: BMW 320d Join Date: Dec 2014 Location: Bedfordshire iTrader: (0)	Coolant leak I topped up my coolant recently and have noticed a lot of coolant splatter around the tank. Also I noticed that when the cap is fully screwed on it is still quite loose. I added a rubber o-ring around the cap and this has tightened it on closure. There is no loose / cracked pipes as far as i can see, maybe i need to replace the coolant tank, but im not sure. From the residue it looks like it has sprayed out from somewhere on the tank in very small amounts. Has any one come across this problem, before I replace the coolant tank and find out its something else? Car goes on for its recall on monday so looks like this will be my next job..! I will posts some pics shortly.
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06-24-2018, 10:12 AM	#2
Nel2014 Banned 22 Rep 260 Posts Drives: BMW 320d Join Date: Dec 2014 Location: Bedfordshire iTrader: (0)	Here are some photos showing whats happening... Last edited by Nel2014; 06-24-2018 at 10:35 AM..
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06-24-2018, 10:31 AM	#3
Nel2014 Banned 22 Rep 260 Posts Drives: BMW 320d Join Date: Dec 2014 Location: Bedfordshire iTrader: (0)
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06-24-2018, 10:36 AM	#4
Phil325i Brigadier General 616 Rep 3,194 Posts Drives: E92 325i MSport Coupe Join Date: Apr 2012 Location: UK South East iTrader: (1) Garage List 2009 BMW 325i Coupe [6.00]	There's been a few cases on the forums of leaking caps. I changed mine about a year ago as a precaution. __________________ E92 pre-LCI 325i - Ohlins R&T; H&R spacers; M3 strut brace; Swift thrust sheets; 3 x chassis braces; diff brace; N53 V-brace; 034 subframe inserts; BMS clutch stop; BMS CDV; RE g/box mounts; Delrin shift bushes; Saikoumichi OCC; Cyba scoops; BMW Perf Exhaust; HEL s/steel brake hoses; M3 rear spoiler; Recaro Sportster CSs; M3 white dash LEDs; LED Angels; LED side repeaters; BMW Perf black grille; CSL reps; SSDD carbon diffuser; Monster Wrap black roof/clear front
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06-24-2018, 10:43 AM	#5
Nel2014 Banned 22 Rep 260 Posts Drives: BMW 320d Join Date: Dec 2014 Location: Bedfordshire iTrader: (0)	Yeah I may try that as it was loose used o-ring as temp measure to help tighten it up when closed, think it may be the tank as well tho. Also noticed this the coolant pipe going into the bulk head has turned white - may have a leak there as well
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06-25-2018, 12:38 PM	#6
Nel2014 Banned 22 Rep 260 Posts Drives: BMW 320d Join Date: Dec 2014 Location: Bedfordshire iTrader: (0)	I think im going to try the cap first then replace the tank. The coolant pipe prob needs replacing as well not sure if it is a easy job or not, anyone else had this problem?
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