94 530i Tough Technical Question

["Alan Polo" <avpolo@xxxxxxxxxxx>]

This is a tough one going out to all of you BMW technicians.  I have a 1994 
530I with the problematic V8.  About 85% of the time the car runs great.  
The other 15% of the time it runs like crap.  It hesitates and there is a 
significant loss in power.  It seems like there is to much gas going to the 
engine because you can smell gas coming out of the exhaust when it runs 
poorly.  There are 2 ways I can make the car snap out of it.  If I am 
driving and this happens and I have the space, I floor it for a few seconds 
and the car will run fine.  If I am city driving, or come to a stop I 
disconnect the battery for a minute or two and it will run fine once I 
connect the battery again and start it up.  It took me a while to figure out 
the battery thing.  Don't ask.  It seems like I am resetting something when 
I disconnect the battery, but I am not sure if the problem is electrical or 
not.  I have replaced and checked all the usual suspects including fuel 
filter, air filter, plugs, coils, etc.  This is my last ditch effort to 
resolve the problem on my own before I bring it to the dealer.  Any thoughts 
on what it may be are greatly appreciated.  Please respond to me privately.
Thanks a lot.
- -Alan

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