PDA

View Full Version : BMW e34 Smoking



Grot
04-09-2013, 01:29 AM
So i have a feeling you all will be able to helo me a little more than the Bimmer forums.

I recently purchased a 92 525/5.
Has 180k on it.

I bought it and drove it for 3 weeks. no problems.
It did have a little bit of a burning smell to it, but it was one that i have had with other older cars so i ignored it.

I changed the oil and filter about 3 days ago.
Put in a 5 quart jug.

I drive it for 15ish miles, park it. it says "low oil"
After work i stop by the parts store, and grab another quart and dump her in.

since then i have been smelling burning oil, and blowing smoke.
Is it possible its just overfull?

Possibly unrelated, but worth mentioning:

Car seems to have no power under 3k.
(could just be me, i went from dailying an 03 mustang mach 1 to the 525)
Suspension is extremely soft, severe nose lift and rear squat on acceleration.
Smells like its running rich (onboard says i avg 15.8 MPG)


Also has a hesitation around 2k RPMs in first gear

Grot
04-09-2013, 01:30 AM
So far:

Cleaned the MAF and TB to no avail.
Oil level is aprox 1 mm below the top full line.
Checked coolant, not seeming to burn much, if any.
No oil in coolant, or vice versa, from what i can tell.

Smoking is much worse after coasting for a distance then hitting the gas again, will get a sizable cloud.
It is blue oil smoke for sure.

Nitro_Alltrac
04-09-2013, 02:58 AM
How fast is it actually going through a quart of oil Aaron?

T-spoon
04-09-2013, 03:11 AM
Ring blow-by. I'd bet... one tongue depressor on it.

Grot
04-09-2013, 04:39 AM
Before the oil change, i was using a quart a week, week and a half. Since the i dunno.
I hadn't noticed the smoke til after the change.

I'm hoping its not rings, but that's the prominent idea in my mind too

MCcelica
04-09-2013, 05:39 AM
Ring blow-by. I'd bet... one tongue depressor on it.

This is where my mind went too, since you said it wasn't getting oil and coolant mixed up. But that's kind of a lot of consumption though. You would have to have blow-by in all cylinders. I'm thinkin' it could also be valve seals, or some combination of the above.

Grot
04-09-2013, 06:32 AM
Valve seats would explain the smoking on deceleration.

Nitro_Alltrac
04-09-2013, 11:57 PM
I agree with the other guys. I'd say it's something going in the head. At that mileage, even with a German car, the rings could be going.

Have you checked the compression?

Grot
04-10-2013, 05:08 AM
No. I have done essentially zero diagnostic. I don't have the tools, or the cash to rent them right now.

T-spoon
04-10-2013, 05:39 AM
No. I have done essentially zero diagnostic. I don't have the tools, or the cash to rent them right now.

So you bought an old BMW for a daily? :hehe: Don't feel bad, our sub 100k Spyder is burning oil on it's second POS 1zz

MCcelica
04-10-2013, 06:09 AM
So you bought an old BMW for a daily? :hehe: Don't feel bad, our sub 100k Spyder is burning oil on it's second POS 1zz

Somewhat of a rhetorical question. Is there such thing as a "non-POS 1zz"?

Grot
04-10-2013, 06:40 AM
So you bought an old BMW for a daily? :hehe: Don't feel bad, our sub 100k Spyder is burning oil on it's second POS 1zz

Haha yes i did, but i knew it would have its issues. This is just not an issue i was hoping for. especially since im making a road trip in a month.

MCcelica
04-10-2013, 07:31 AM
Dude, honestly... if your luck is anything like mine, you have multiple issues that will only screw you over for your road trip. I'd get rid of that hunk and figure things out from there...

The Captain
04-11-2013, 12:42 PM
I'd check how much air is coming out the PCV.