Richard7666 0 Report post Posted April 14, 2014 (edited) Two days ago my e46 (n42 engine) developed a loud ticking sound: - It only occurs at idle, or when the car is 'coasting' at low speed after I remove my foot from the accelerator (eg right before coming to a stop) - never occurs under acceleration - mainly occurs while idling in Drive/reverse, though yesterday it was cold and noticed it sporadically while I was idling in park. Very audible in the cabin, unfortunately hard to pin down with bonnet open as the rest of the engine drowns it out. Anyone have ideas? Edited April 14, 2014 by Richard7666 Quote Share this post Link to post Share on other sites
MISS BM 712 Report post Posted April 14, 2014 By no means an expert opinion here, but noisy lifters? However I would assume the sound would stick around and increase at acceleration points. Quote Share this post Link to post Share on other sites
cliffdunedin 8 Report post Posted April 15, 2014 Are you running Synthetic oil? My e36 had the same problem when i changed to thinner oil, after a change to 15/40w the noise stopped. Quote Share this post Link to post Share on other sites
Richard7666 0 Report post Posted April 15, 2014 It's 5w/40, BMWLL01 rated, fully synthetic. Same as I've always used Quote Share this post Link to post Share on other sites
B.M.W Ltd 950 Report post Posted April 15, 2014 It's 5w/40, BMWLL01 rated, fully synthetic. Same as I've always used Give me a call Richard Quote Share this post Link to post Share on other sites
