335i thirst for water

blingrhino · 05-25-2009, 05:56 AM

My 2007 335i coupe is developing a thirst for radiator water.
i would have to fill a litre every 2 months-is this normal.
also noticed a slight missing on throttle response recently then i filled top up reservoir and seems fine again -would this be related?
36k miles no other problems except a gate/flap on the turbo replaced under warranty.

CraigUK · 05-25-2009, 06:01 AM

You shouldn't need to fill up the radiator at all, you must have a very minor leak. As your car is under warranty I would take it into the dealer for repair as small holes always get bigger.

As for the misfire, I suspect that this is coincidence and is not related to the coolant. Having said that it is worth mentioning too when at the dealer.

jjbirch · 05-25-2009, 06:05 AM

i have the same problem but with diesel, got to keep filling up

G33 · 05-25-2009, 06:25 AM

lol i didnt even know i needed to put water in it!

only water i put in is mineral water into the washer fluid reservoir

05-25-2009, 05:56 AM	#1
blingrhino New Member 2 Rep 14 Posts Drives: 335i coupe Join Date: May 2009 Location: ireland iTrader: (0)	335i thirst for water My 2007 335i coupe is developing a thirst for radiator water. i would have to fill a litre every 2 months-is this normal. also noticed a slight missing on throttle response recently then i filled top up reservoir and seems fine again -would this be related? 36k miles no other problems except a gate/flap on the turbo replaced under warranty.
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05-25-2009, 06:01 AM	#2
CraigUK Captain 126 Rep 641 Posts Drives: F11 LCI 520D Sport Tourer Join Date: Jan 2009 Location: Durham iTrader: (0)	You shouldn't need to fill up the radiator at all, you must have a very minor leak. As your car is under warranty I would take it into the dealer for repair as small holes always get bigger. As for the misfire, I suspect that this is coincidence and is not related to the coolant. Having said that it is worth mentioning too when at the dealer.
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05-25-2009, 06:05 AM	#3
jjbirch Banned 75 Rep 2,927 Posts Drives: E60 530D M SPORT Join Date: Feb 2006 Location: england iTrader: (0) Garage List 2006 320d m sport [0.00]	i have the same problem but with diesel, got to keep filling up
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05-25-2009, 06:25 AM	#4
G33 Colonel 91 Rep 2,079 Posts Drives: 335i Join Date: Jun 2007 Location: London iTrader: (0)	lol i didnt even know i needed to put water in it! only water i put in is mineral water into the washer fluid reservoir
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