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7 Series / 8 Series
The BMW 7 series and 8 Series Forum

 
 
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  #1  
Old 02-09-2010, 05:38 PM
pkrwilliam pkrwilliam is offline
Registered User
Location: Willmington
 
Join Date: Feb 2010
Posts: 3
Mein Auto: 740il
2000 740, sputter, shutter, not smooth like butter

So I posted once and seem to have gotten no replies and lost thread.

So I am asking for help again,

Around 20 - 30 mph at a slow acceleration the car will start to shutter, sputter and just seems t be missing. I have ran BG 44k trough the engine with a full tank of gas and it is now at the bottom 1/4 of the tank and seems to be as bad as it was.

It did seem that with the gas tank in the middle stages of the tank it ran better. Doubt it has anything to do with it but seems to be that way.

So, no check engine lights on, no warning lights. Engine runs strong so no a compression problem.

I am going to check for a cracked spark plug and have a master tech run a diagnostic on it tomorrow but wanted to see if anyone has seen this before.

2000 740il
New mass air flow sensor and new rear main seal, not sure if this helps but these were done 10k ago. Miles are 205,000.

Thanks

Stresssssssed out and sputtering
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  #2  
Old 02-10-2010, 08:02 AM
TxGr8White TxGr8White is offline
Sick Puppy Motorwerks
Location: Dallas
 
Join Date: Jan 2010
Posts: 132
Mein Auto: BMW 850Ci
fuel filter
ignition coil(s)
vacuum leak
__________________

White 1993 850Ci - 251,187 miles
Black 1993 850Ci - 125,508 miles
  #3  
Old 02-10-2010, 04:07 PM
pkrwilliam pkrwilliam is offline
Registered User
Location: Willmington
 
Join Date: Feb 2010
Posts: 3
Mein Auto: 740il
Hey thanks for your help. Sent to BMW dealer and will be sure to post the answer.
 

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