[Ask92]

Finally picked up a e90 after searching for a few months. The car is a 2007 335i fully loaded(besides a few small things like ipod adapter and active cruise control), it even has folding rear seats . It is a 155k mile car(yes I know the whole "omg the miles are so high" argument) but is cleaner, drives better and is smoother than most of the <100k mile cars I drove as this cars 155k miles were almost all highway and the owner took very good care of the car. I have already put 600 miles on the car in the last week.My question is what is some typical maitence that you guys can recommend for the car? The following has already been addressed:

-HPFP(Previous owner)
-Injectors(Previous owner)
-Valve Cover Gasket(Previous owner)
-OFHG(Previous owner)
-Serp Belt 10k ago(Previous owner)
-Oil every 7k(Previous owner)
-Spark Plugs 5k ago(Previous owner)
-Valve carbon cleaning(Myself)

What my plans are:

-Coolant Flush(When the OFHG leaked oil got into the coolant and they flushed it, but I can still see some slight oil residue in the overflow)
-Waterpump and T-stat(never been replaced)
-Transmission flush(It has never been done, so I assume it needs it, however the trans shifts perfectly)


And of course pictures:


The fleet

Car still gets great gas mileage on the freeway!

Valve cleaning(Carb cleaner and brushes) and headlight restoration



lolz:


Plans for the car include a jb4, DPs, wheels, suspension, CIC idrive, detail and maybe a front lip and trunk spoiler. These are all cell phone pictures, I hope to detail and clean the car and get some good DSLR pictures soon.

[jt335i]

Nice ride! Congrats!
155,000+ miles is no big deal. If the previous owner maintained it well as you mentioned, then you're good to go. Looks like you’re an experienced DIY type owner, so you got things covered. I would check the brakes in the Vehicle Status to see when they’re due, that’s if it’s been reset correctly, or have them visually inspected. Also, if the previous owner left the maintenance booklet, it should tell you what things should be checked and replaced at certain miles.

Good luck and enjoy that bad boy!

[willzim]

Nice pick up! Maybe check the ignition coils, if they haven't been done in a while it is an easy job. Enjoy her

[Ask92]

Originally Posted by jt335i

Nice ride! Congrats!
155,000+ miles is no big deal. If the previous owner maintained it well as you mentioned, then you're good to go. Looks like you’re an experienced DIY type owner, so you got things covered. I would check the brakes in the Vehicle Status to see when they’re due, that’s if it’s been reset correctly, or have them visually inspected. Also, if the previous owner left the maintenance booklet, it should tell you what things should be checked and replaced at certain miles.

Good luck and enjoy that bad boy!

Good call, I have noticed a slight brake noise when braking while going slowly and the front rotors are slightly grooved so I will probably redo at least the front brakes in the near future. The valve cleaning job actually wasn't too bad(besides that stupid black box) and I had it done in about 4-5 hours with about 3-4 hours being cleaning the valves with brushes and cleaner.

[Wilt]

Do NOT do a transmission 'flush'...do a 'fluid and filter change'!!!
Check/replace all belts, all tensioners and pulleys, all hoses (cooling system, A/C system, power steering system)

[modern_citizen24]

Congrats bro looks sweer. Hoping you got a good deal on it > 10k?

[Ask92]

Originally Posted by Wilt

Do NOT do a transmission 'flush'...do a 'fluid and filter change'!!!
Check/replace all belts, all tensioners and pulleys, all hoses (cooling system, A/C system, power steering system)

I will be doing the filter/pan as well. I know in the supra world with autos we will fill the trans with new fluid, then disconnect a cooler line and start the car until you see new fluid coming out of the hose. Is this not normal with BMWs?

Originally Posted by modern_citizen24

Congrats bro looks sweer. Hoping you got a good deal on it > 10k?

Yup

[08TUNDRA]

Originally Posted by Ask92

I will be doing the filter/pan as well. I know in the supra world with autos we will fill the trans with new fluid, then disconnect a cooler line and start the car until you see new fluid coming out of the hose. Is this not normal with BMWs?

wish it was as easy as it was with my Toyota lol, we cant get that good of a flush with ours due to complications we can only drain and fill repeatedly. just look up a diy its not that bad. miles are just a number if the car is maintained well which yours is, I'm sure every mile is a blast for you like how it is for us. Good Luck

[sirdaft1]

MOTOR MOUNTS.

Do these ASAP.

Us early model guys have an issue where worn motor mounts can cause the power steering pulley to hit the subframe > shred the belt > belt gets sucked into the engine = new engine time. I replaced mine at 135k miles as a preventative maintenance and very glad I did. The old mount had compressed ALOT.

[Chocolatethunder]

Water pump and T-stat haven't been replaced at 155k? That would be the 1st thing i do since i wouldn't want to be stranded.

[WordOnRoad]

Turbos never got done either?

[Ask92]

Originally Posted by sirdaft1

MOTOR MOUNTS.

Do these ASAP.

Us early model guys have an issue where worn motor mounts can cause the power steering pulley to hit the subframe > shred the belt > belt gets sucked into the engine = new engine time. I replaced mine at 135k miles as a preventative maintenance and very glad I did. The old mount had compressed ALOT.

You know I do notice it seems to be rough at idle sometimes, and the engine is not missing at all. I will inspect these ASAP as I have a feeling they are gone, thank you!

Originally Posted by WordOnRoad

Turbos never got done either?

Not that I have found. No smoke, no noise, and full boost The wastegate does rattle when cold even after i tightned it about a turn, so ill need to re tighten them a bit more.

[aeilers]

I will be honest, that was a horrible valve cleaning job from the pic, have someone do it right.

[Ask92]

Originally Posted by aeilers

I will be honest, that was a horrible valve cleaning job from the pic, have someone do it right.

lol 90% of the carbon is gone and the little black spots on the ports are not going to affect airflow and the valve seat is clean which is what will make the biggest difference. I'll take $20 of carb cleaner and brushes over a $500 shop bill or $300 kit any day of the week. I HATE people working on my car, half the time I go back over it stuff is not tight or reinstalled improperly.

[aeilers]

The ports are no big deal, its the valves themselves. From the photo you can still see large build up around the valves.

[aeilers]

How it should look...

[Ask92]

Originally Posted by aeilers

The ports are no big deal, its the valves themselves. From the photo you can still see large build up around the valves.

What do you mean the ports are no big deal? My port on #6 was almost 30% clogged with carbon and you are saying that wouldn't make a difference? The valves themselves obviously would also make a difference and yes mine are clean regardless of the fuzzy cell phone picture you are basing your idea off.

[aeilers]

I am saying from the picture you presented to the group, the port doesn't look horrible after the cleaning, the valve itself still looks bad. All I am saying is if you are gonna do a job, do it right. I would be surprised if you even closed all the valves when you did the job. But its your car and you do with it as you please.

[Ask92]

Originally Posted by aeilers

I am saying from the picture you presented to the group, the port doesn't look horrible after the cleaning, the valve itself still looks bad. All I am saying is if you are gonna do a job, do it right. I would be surprised if you even closed all the valves when you did the job. But its your car and you do with it as you please.

Every port was filled with carb cleaner for 30 minutes(multiple times actually on some) and I turned the engine so don't think I filled the combustion chamber?(But who knows, I obviously have no idea what I am doing so I might have). I understand your thought process that is not 100% perfect and I agree, but again I am not going to essentially throw away $500 for a shop to make the inside of the head look a little prettier when there would be very negligible performance gain to it. This engine obviously has carbon build up issues, so I will be forced to do this again in a few years and will probably have performance loss in 6 months. Getting it pretty to take pictures of post on the interwebz is not that important to me. Whats important to me is that now the traction control is going off when I hit it in first from a roll, which it did not do before the cleaning.

[Ask92]

Well the supra is about to go down for a new build(600rwhp+ or bust) so I want to make sure the bmw is 100% before I take the supra off the road. Also because I will be dumping all my play cash into the supra I want to do all I can to not get hit with a random $1000 parts bill for the bmw. I am planning on doing the following as soon as I get back from Supras In Vegas(Early October):

Waterpump/tsat
Serp belt with pulleys/tensioner
Motor Mounts
Trans pan/filter with fluid
Oil Change with filter
New front rotors/pads

Again, nothing is broken on the car now and it drives very well, but I just want to do some serious preventative maintenance. Anyone have any other idea on what to look for an maybe replace?

Also I priced everything from ECS tuning and it seems to be the cheapest option coming it at around $1,000 for everything with their "pre assembled" non OEM kits. Are there any other sites I should look into?

[Spun Crankhub]

IMHO dont go changing things unless they are showing signs of wear, ie the motor mounts, belts, pulleys, etc... Inspect them and if good let em be. If you are in the habit of changing random parts for the hell of it I would just tell you to scrap the car and go get a new M4.

[Antetokounmpo]

Only things I'd do is water pump and t stat along with oil change and trans fluid change. The other things don't really need to be changed unless they show bad signs of wear.