needs the least amount of gas to run. The engine at wide open throttle at 90mph needs the most amount of gas to run. When a fuel filter gets plugged up the Engine won't run at high speed because it can't get enough fuel but typically it will easily get enough to run at Idle.... This fuel filter thing is a plot by autozone to sell more filters So the first symptom of a plugged up fuel filter is no high speed power or no high speed period...




Quote Originally Posted by SharkmanBMW
I would start with the filter, every time I brought my car to the e34 indy, he insisted on changing it - years of constant problems with e34 filter issues taught him well!

simple and cheap, worth a shot.
Were you low on fuel? Climb a hill?

I ran out of fuel in the 540 a few times, it seemed that because of my driveway (big hill), if I was low, the tilt would empty the tank enough to one end that I couldn't restart it without adding a few gallons.

It sounds like what you described, sputtering, then dead. After refueling a bit, it would crank for a minute before starting up as well, it was not instant, and would chug for 30 seconds before idling smooth.
Good luck.
Surely, the big guns of the forum will be around soon to help you out though!