Rough idling.....

  • Click here to become an Official Member of BMW Club Malaysia Download Form
took the car to m-speed usj. Diag, check hoses, plug gap, all ok. Meng and I suspect very slight leak from flywheel oil seal compromising the engine vacuum system. He says it's quite possible considering the fact these engines do not tolerate even the slightest leak (Any opinions??). Need 1/2 day to sort out the flywheel seal, might live with it till the leak gets really bad or might have it done this weekend if time permits. Will post if problem is solved with seal change.

Cheers!
 
Same problem here. Anyone, please pm me mspeed usj map or website. Thanks.
 
Originally posted by vincent@May 8 2006, 03:36 PM
from the look at it is should be the same unit ..
vincent,

u mean, from what I described, you too think it could be the flywheel oil seal? Didn't really understand ur reply.

Cheers...
 
Guys,

Took the car up to Pg and Back to KL for w/end. After the drive, engine seems very smooth and also very quiet - and no more roughness when idling. Very strange.. Could it have been just carbon build-up on the valves due to town / stop-go driving???
 
Ha ha ha.

Your car just have not been driven properly for a long time.

You are right. Too much start/stop city driving.

Once a week, take it up to 3,000 rpm for abt 20-30 min or so.
 
bro lee,

sometimes i purposely take it above 5,000rpm and hold it for few mins (after wash my car),let all the carbon blow out, is it ok ?
 
I am also having a slight vibration when in N or D. May need to give the car a good ride over the weekend!
 
Anxious,

Come down to KL and visit us, occassionally 'slightly' exceding the speed limit, and your car will feel much better. I promise.

Everytime I make a trip to Penang, the car feels more 'youthful', lighter, and 'refreshed.' Our cars are meant to be driven, not pottering around in traffic jams... in fact the user manual recommends taking it over 3,000 rpm after a bout of slow driving.

Driving Notes

Engine
Do not allow the engine to warm to its
normal operating temperature by leaving
it idling with the vehicle parked.
However, when starting in extremely
cold weather it is a good idea to allow
the engine to run at fast idle for about
30 seconds before getting underway;
this precaution ensures adequate lubrication.
Avoid high engine speeds while the
engine is still cold; this helps avoid premature
wear and reduced service life.
When driving under high engine loads
(acceleration, steep hills), try to keep
the engine running above 1,500 rpm.
We recommend downshifting into a
more suitable range, especially when
driving up extended inclines.

It is a good idea to follow extended
periods of low-speed operation (dense
urban traffic, stop-and-go driving) by
maintaining an engine speed consistently
above 3,000 rpm for several
miles. This procedure helps prevent
deposits from accumulating in the
engine.


(My favourite paragraph of the manual)
 
I have driven my car to KLIA and rev it till 5000rpm ... last weekend, I have a quick run.. but the idle problem is still there.

Have yet to change the spark plugs and there a small leak at flywheel too.

I have changed engine oil, ATF oil, airfilter, IVC..

WHat not.. Spark Plugs, AFM and misc
 
Top Bottom