Quote:
Originally Posted by Rookie48
Try switching to a good grade fuel... after all the $hit I did with my X5, a freak twist of fate seems to have solved my issue. I was using Gulf 92 octane fuel with no ethanol added for over a year. I trusted the gas station, no reason to believe it was poor fuel. One day, I had no choice but to put in a tank of Sunoco Ultra 93 octane (with ethanol). Within 100 miles, the issue subsided. Since then, Sunoco fuel only, and the misfire issue has not re-occurred!
No clue why, but it resolved my issue for now.... worth a try!
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I can help you here. If you pull a fuel sample at the fuel rail and place it in a glass container (SEE MOTOR SERVICE MAGAZINE FOR REAL LIFE EXAMPLES and test procedures), you will discover that water and ethanol mix is way beyond the ability to burn cleanly. ADD injector cleaner/dry gas additive to 1/2 tank, repeat until gone....Or drain tank. Most of us pick up water and poor fuel mixes from stations with low volumes or "discount stations". Real life issue all over the USA especially in the colder areas due to seasonal fuel change overs.
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2005 X5 4.8IS
The Blue ones are always FASTER....
Current Garage:
2005 X5 4.8is
2002 M5 TiSilver
2003 525iT
1998 528i
Former Garage Stable Highlights
2004 325XiT Sport
1973 De Tomaso Pantera, L Model
1970 Dodge Challenger T/A 4 sp Alpine White
1970 Dodge Challenger T/A 4 sp GoManGo Green
1971 Dart Sport, “Dart Light” package
1969 Road Runner 383
1968 Ply Barracuda 340S FB Sea-foam Green
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