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|3-Series (E46, E90) Chat relating to the BMW 3-Series from 1999 to Current. Models include: BMW 316i, BMW 318i, BMW 318Ci, BMW 320i, BMW 323i, BMW 325i, BMW 330i, BMW 328 Ci, BMW 328i, BMW 325i/xi, BMW 330Ci, BMW 320d, BMW 330d, BMW 335d.|
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I bought a BMW 320D about two months ago. Best money i ever spent, However in the last few weeks, with the v cold weather, i have noticed a pronounced knocking sound coming from the engine when 1st started. This goes away after she heats up. Anyone got any idea what this could be? This only happens when it is cold weather. Im really concerned that im doing damage by driving her but my mechanic cant see me till next weekend...
Any help you can give is greatly appreciated
Hi Johnny, thanks for the welcome!
I will check this out tonight for sure. However if it was the smog pump would the knocking get worse in cold weather? We are experiencing below freezing temperatures here at night for the past week. It is only on the morning after a cold spell that the sound is so clear (it is quite distinctive and pronounced. You can hear it inside the cabin or even from a 15 - 20 feet away from the car)
p.s you car is awesome looking. i must get a pic of mine on as a profile pic so you can have a look.
Hey Johnny, So you the pressure relief valve could be my problem in the cold? I wonder if it causes any damage??
thanks again - you've been a great help with this mate.
p.s check out my profile pic and tell me what u think of my baby! Shes not quite as "blinged" out as yours yet...but im working on it!!
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