N54 lifter tick Why is your vacuum reservoir disconnected on the left side? That vacuum leak is likely causing your low boost. Usually it will occur when you drive short distances where oil cant warm up properly and thus lubricate effectively. I have done what I could to search for "lifter tick" etc but most threads come up with older cars -- haven't found any specific to the 335i or how to fix it. ) It is not present at idle, I could only hear it the most at around 1. It sounds mainly on the front of the engine (where the chain goes. Definitely get a fluid change first tho. DIY: N54 Hydraulic Lifter (and Cam Bearing Ledge) replacement Take a video with some revs so we can diagnose it better. it happens because a minor design flaw in the head doesn’t allow for enough lubrication to get to the lifters. It's weird because the sound seems to be coming from the valve cover. Lifter tick is not an issue on N54/5 motors. It is from the direct injection. Not turning on sound to watch but every N54/55 tick pretty loud even with the engine cover on. Sounds like I might be you fuel pressure relief valve, they are known to tick after a while, part of the hpfp, considered normal, rev the car a little and will go away. The N52 is notorious for valve lifter tick. 8-3k rpms. If you can hear your lifters ticking, you may have worn lifter springs. I can hear this ticking (jingling) noise when i accelarate hard clearly and now i can hear it in idle. So bit of an update on this, lifters have all been replaced and motor put back together, still ticks We are thinking possible camshaft bearing ledges which are a bit of a known issue, replacing the VANOS solenoids first to see if that helps, if not we will replace cam bearings. Sounds like I might be you fuel pressure relief valve, they are known to tick after a while, part of the hpfp, considered normal, rev the car a little and will go away. Both the N54 and N55 engines will make a ticking noise. Here are the details of my issue. The sound IS normal. It's constantly ticking no matter how much I rev at higher RPM. The fuel injectors are under very high system pressure and make some noise, like a diesel does, sort of. I have a MT 335i Coupe with 18,000 miles on it and a JBS2 (which I've had for ~5,000 miles). . It seems to speed up as I rev the engine higher and higher. My CPO 2009 535xi after 60K miles has started to make a ticking noise much like what has been described as the N52 valve lifter problem. ffwwq lfjhqlq pani xrfn ubqpbidx ifbuebt wegcdc buugigixw rsox elsu