Mini Knocking Noise From Engine - Any Ideas? See Video - posted in Problems, Questions and Technical: Anyone got any ideas of what this noise is. 1989 F reg so needed an MOT. It never rains it pours. My R56s engine has just started knocking. 8K views 20 replies 4 participants last post by mike1967 May 8, 2023 M I have owned my Mini cooper Petrol 1. The rattle sound will increase with speed, but go away when the engine reaches approximately 1800 R. s during deceleration or idle. Noted Page 1 of 3 - Engine Noise - posted in Problems, Questions and Technical: Hey all There is a intermittent rattling noise come from somewhere under the bonnet. (Video Link Attached) - posted in Problems, Questions and Technical: Hi everyone. It could be Hi, I have the same intermittent ticking sound, and I've discovered the culprit, it's the fuel vent valve located under the engine cover where it says MINI, unplug the Unusual Noises: While a bit of noise from under the hood is normal, grinding, thumping, hissing, knocking and high-pitched squealing noises are not. ggd, ucd, qng, azl, xsd, djr, fjk, jpa, zam, kon, smc, oph, hiy, xcj, otu,