BMW: VEHICLE MAY INTERMITTENTLY EXHIBIT ANY OF THE FOLLOWING: HARD TO START OR MAY NOT START; ENGINE RUNS ROUGH AND LACKS OR LOSES POWER; ENGINE POWER REDUCED. VAPOR LOCK IN THE FUEL SYSTEM COULD OCCUR UNDER CERTAIN ENGINE OPERATING CONDITIONS, WHICH THEN WOULD CAUSE A DROP IN THE LOW SIDE FUEL PRESSURE. *PE UPDATED 7/22/09. MODELS F01 AND F02. *PE