N54 Common Issues & Important Maintenance
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- Опубликовано: 27 июл 2024
- I go over all the common issues with the N54 engine.
0:00 Intro
0:24 Coils & Plugs
1:19 Oil Leaks
1:51 Vacuum Lines
2:14 Boost Solenoids
2:32 VANOS Solenoids & Intake Check Valves
3:03 Water Pump & HPFP
3:36 Fuel Injectors
4:15 Ground Strap
4:35 O2 Sensors
4:58 PCV Valve
5:24 Accessory Belt
6:01 Wastegate Rattle
6:48 Automatic Trans Service
7:30 Fluid Change Intervals
8:05 Upper Rad Hose
8:25 "Mickey Mouse" Hose
8:55 Carbon Buildup
9:53 2007 Issues
11:42 Other Issues
11:54 Outro
Coolant Hose "Mickey Mouse" Flange: www.fcpeuro.com/products/bmw-... 
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Awesome show 👏..
I bought my wife a 2010 BMW 535i With M package brand new in 2010. We still have it. She loves it still to this day. 132,000 miles. It took a lot of maintenance to get it there. Most of the items you mentioned have been done. Car still looks new. Once again it took a lot of maintenance to get it there. I have a 2008 F150. 245,000 miles. Running like a champ. No issues. The bmw could have never made it to that point without issues. A lot of issues. Lol. I only maintained the bmw the way I did because my wife loves the car and hasn't asked for another car since.
Great general knowledge video. Full of food stuff for people new to the platform. Keep it up!
Great video, I was scared to own an 54 because of the bad rep they have but I’ve done most of these things and I’ve been problem free for over a year now.
I literally just fix what is needed when it's needed. As long as you're expecting certain potential failures it's a great car.
Glad to see i am not alone out there tracking my e90 n54. In every track day here out west, I haven’t been on track with a n54 powered car
Only other N54 car I've seen on the track was a stock 135i. He was doing pretty good and wasn't dealing with overheating unlike me lol
Great video! Your thumbnail caught my eye so I thought you might know something about tracking/autocrossing the N54. Sorry if this is off topic, but this should go along with common problems.
I'm planning to track a E92 335xi N54, and one common issue I hear a lot and am concerned about is overheating issues, especially on track days. Even with the factory oil cooler, it can still overheat and get you to limp mode when reaching an oil temp of 302F, so I was just wondering if you have done anything for cooling?
Also, the N54 's oil temps according to BMW runs around 240F under normal driving and some people bring that down all the way to 200-215F with something like two aftermarket oil coolers, under normal driving conditions. Not sure if that's safe to keep it that low compared to the factory spec so I would like your opinion. I believe around 230F for normal driving, and 260F for track driving would be optimal. Nothing over 270F.
My plan would be to install an aluminum radiator, one aftermarket oil cooler (possibly use the OEM one at the same time, making it two oilcoolers), lower-temp thermostat, upgraded water pump, aftermarket inter-cooler, and some good fluids. I might even install water/meth injection for lower IAT temps. This is what BimmerWorld did on an E90 N54. You can search "How to Build the Ultimate N54-Powered E90 BMW 335i" on RUclips to check it out. No cooling issues at all.
I know the pulley system might need maintenance, and there is an aftermarket Billet crank seal guard to prevent sucking of the belt when the plastic crank wheel breaks, which there is also a Billet version of the crank wheel. Sorry for the long comment, but I just couldn't find an answer anywhere online and I don't like using forums. Glad I can find someone who autocrosses an N54!
My first track day was in around 80° weather, I had the oem oil cooler and a 5” stepped intercooler. Heat soak was pretty bad, was down a lot of power. Oil temps were hitting 295°+ so I would do cooldown laps to avoid hitting limp mode.
The two fixes I’ve done that have helped so far are installing the 7.5” racing fmic, which drastically kept down IATs. The second fix was pretty funny, I rerouted my windshield sprayer line to a nozzle that sprays my oil cooler and I just fill the reservoir with water. I then pulled the fuses for the windshield wipers and headlight sprayers. Was a $10 project. Planning on making a video on this in the next few months. After doing this, during a 90º track day the car was much faster with the new intercooler and I never saw oil temps climb over 280º. Whenever I would approach the 280º mark I would spray the oil cooler and it would drops temps ~5º or keep them stable.
As I get more track time my laps will definitely become faster and get the car hotter. What I have planned is to install a larger 25 row oil cooler and the CSF radiator and perhaps a transmission cooler. I had installed a larger oil cooler but the lines were unsafely low quality so I removed it and plan to reinstall it this summer.
I believe the lower temperature thermostat is an unnecessary mod as when you get on the track your oil temps will climb and open it fully anyways. (Opens fully at 235ºf i believe) All this would effect is the time it takes for your car to warm up. Keeping the stock thermostat is good for daily driving and the track.
Meth injection isn't the best route, especially with track use. I've heard numerous stories of hydro-locked engines due to unreliable injection which keeps me away. A better method may be getting a custom tune made for an E30 mixture. This will be safer for the track with the octane boost and will have the engine run cooler.
Planning on making some videos on cooling and track updates within the next few months so stay tuned 👍