Fuel Hoses Lines/piping And Fittings Problems of BMW 5 Series

2008 BMW 535i, with sport package with 3. 0 ltr twin turbo engine. Twice since purchasing new on 1 August 2008 the "engine malfunction-reduced power" warning appeared. In both cases warning light disappeared after driving between 25 and 40 miles as did the lack of power. Car also occasionally starts with rough idle that disappears within less than a minute. Car is in the shop now for the first time and initial reports show record of "misfire" event. Issue could be very dangerous if it happens at a very inopportune time such as when acceleration is required to safely blend into traffic. Needs definitive fix immediately! multiple complaints on line in many forums suggest that fix is not yet available from BMW. Perhaps a redesigned high pressure fuel pump is required vice a replacement with one of the current design.

See all problems of the 2008 BMW 5 Series 🔎.

Second high pressure fuel pump failure in less than 2 months ( first one replaced the 2nd week of December 2008 had another fail today on the way to work 1/14/2009). The high pressure fuel pump (hpfp from now on ) on the n54 motors from BMW has become a major issue spreading across 3 different lines ( 1,3,5 series) , some thing need to be done quickly, since buying low content ethanol fuel is nearly impossible. This was the excuse I was given, failures due to "high" ethanol content ( above 10%), drivers have no way of testing at the pump how high the content is except for the labels on the pump.