Re: Removing Carbon deposits?

["Thomas Petersen" <bmw318is92@xxxxxxxxxxx>]

Bill,

I don't know if this 'old' trick is useable on injection engines, but i have 
succeeded in removing carbon deposits on a old carburetor car with mineral 
water. I rev'ed the engine up to about 2000 rpm's and slowly poured a little 
bit of the mineral water down into the carburetor.
Anyways, if it's not applicable to injection engines (I doubt it, I can't 
really see where you should pour the water in...), you  could try giving the 
engine some beating - that is driving it for a while with high rpm.

Regards,
Thomas Petersen
'92 318iS Coupe - Supercharged to 205 HP
>------------------------------
>
>Date: Sun, 25 Jun 2000 14:48:13 -0400
>From: "W. A Kalarness" <bakalarn@domain.elided>
>Subject: Removing Carbon deposits?
>
>Hi,
>
>I think I've finally found the cause of a problem that's been bothering for
>a while.  My 95 325i has been pinging whenever it's running between 2-3K,
>mostly around 2500rpm.  Otherwise the engine runs silky smooth.  Yesterday
>afternoon I replaced the spark plugs and noticed that the piston crowns for
>each cylinder were coated with carbon deposits.  Is there any way to remove
>this without removing the head?
>
>The car sees a pretty even mix of city and highway mileage.  Any input is
>appreciated.
>
>Thanks,
>
>Bill Kalarness
>'95 325i - Alpine White
>
>------------------------------

________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com

------------------------------

End of bmw-digest V9 #1506
**************************