Quote:
Originally Posted by Torqu3
1) Other than the "normal" things to look for when considering buying a 335d, are there any 335d specific things that should be looked out for?
-Not sure what you mean by "normal", but the best place to start is service records. Was CBU cleaning done(happens to everyone, needs to be done), was the SCR replaced(happens to some, very expensive when out of warranty), was scheduled maintenance done? My car had immaculate service records with injector replacements and CBU cleaning. Gives you peace of mind that some expensive things aren't likely to break.
2) What are the most common issues people have had with these cars/engines?
-Carbon Buildup, SCR Tank failure, Harmonic Balancer Failure are the big ones. Harmonic Balancer can and should be done by yourself. Had I known this, it would have saved me $500 when I got the car. Carbon Buildup is usually the root cause of many problems with these cars, which is why many people opt to have it tuned and illiterate/have meth installed, in order to keep the ports clean. The SCR tank is insanely expensive if it goes out($7k is the last that I heard).
3) Are these typical diesels in that they'll run "forever" with proper maintenance?
-I also want to know this. There's plenty of people here that have high mileage with minimal issues, but it's fairly hit or miss on your luck there. Most cars run forever with proper maintenance, and diesels also tend to last even longer than that, but I don't know about these engines in particular.
4) What DOES typical maintenance consist of?
-If you mean just items, it's the same as every other car. Oil, filters, tires, brakes. Tires are expensive, and will go fast if you don't exercise self control. These cars just beg to be pushed. I do maintenance myself, so I'm not sure what a shop charges, but oil changes cost me about $80. I just did brake pads, rotors, and fluid for $450. Fuel filter is $50 or so.
If you have any questions just ask.
|
Thanks for the reply.
By "normal" I mean checking for leaks, checking bushings and ball joints, scanning for pending codes, looking for rust, checking shock towers, etc, etc. On the gas BMW's I've purchased over the years, I would always check for unusual VANOS noise, check to see if any of the plastic cooling system has been upgraded, sub-frame issues, etc. BMW has always seemed to have common issues that tend to be engine and/or chassis specific. I was wondering if the same goes for the M57. And yes, the first thing I always look for are service records-I fully agree.
So regarding the carbon build up, what does that service usually entail both in process as well as cost?
What happens with the SCR? Is that something that can be repaired via DIY or is a replacement 100% necessary? Also, can any of these emissions things be coded out via tuning?
I'm very familiar with "normal" auto maintenance, I just didn't know if there was any M57 specific maintenance that I didn't know about.
Thanks a lot for the info, Torq3.
Quote:
Originally Posted by dmanb2b
I'll get the ball rolling. Mods, can you please please please get a sticky?
1) Carbon build-up aka "CBU" - if all emissions are in tact seems to be a ever 50-60K mile service required
1a) Injectors go bad, seems to be CBU related
2) Harmonic balancing pulley - tends to give up around 70K-120k miles
3) SCR mixer and related codes
4) driveshaft guibo
5) Transmission filter and fluid should have been serviced every 50K
6) Vacuum lines need replacing
7) thermostat tends to fail open after 5+ years
8) Urea tank issues
There are likely more, but those are the main ones I can think of. Plenty of examples running around with 150k+ miles, but definitely not a low maintenance car. Some of those issues can be avoided, especially if said vehicle hit a few potholes and lost some equipment along the way.
|
I'm familiar with guibo, transmission fluid, and thermostat replacements-those tend to be a necessity on all BMW's. But the CBU, injectors, balancing pulley (although obviously the injectors and pulley are very self-explanatory), and urea tank issues I am not.
What vacuum lines tend to need replacing? Why do they seem to be a common issue?
Mike