Re: M50, '92 525I Rough idle

[Stephen Rowe <srowe@xxxxxxxx>]

>Date: Mon, 24 Aug 1998 21:10:55 -0400
>
>I to have a rough Idleing 1992 525I.  Its got 84,000 miles and I've owned=
>
>it for about a month now.  The car runs great at any RPM but idle.   Sinc=
>e
>this is my first BMW (always had an American car in the past, large engin=
>e
>low RPM) I wasn't sure that it just idled rough due to the valve timeing
>differences that would allow the car to achive 6500 RPM.   Any comments??=
>?
>
> I'm a new comer to this list but have been reading it for the last 2-3
>months.  Learned a lot.
>Thanks,
>
>Ron Gaudet      1992 525i (It drives so smooth)
>CCA#158247          1992 Suburban for Wife-Kids-Dog-pulling boat and Stuff


Ron,
The original M50 motor was very prone to a slightly "lumpy" idle due to the
aggressive cam timing. The dealers were provided info on adjusting this
out. But it comes at a cost, that being the upper end torque and hp. If you
like the non-idling portion of your motor, leave it alone.

Mine has had this "problem" since I purchased it with 416 miles on it: )

Enjoy,

Steve

WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW
'91 525i (BL/SS, Korman mod head, 140k, Redline, K&N, chip)
'88 Cherokee (4.0L, 148k, NP242, Redline, K&N, MSD)

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