[romask]

Hello,

After a visit to a petrol station, I filled up with fuel (E95 petrol) and (by mistake) didn't turn the fuel filler cap fully. I drove about 4 km and noticed that the car started trying to stall on idle.

I screwed the fuel filler cap on properly and tried to drive on. The car runs without problems in both D and R gears. However, it continues to try to stall on P and N.

Also, when I start the car in the morning (Cold start after 8-10 hrs of parking) the car runs without problems for about 8-10 minutes then starts trying to stall.

Fuel Rail Pressure at idle is about 48-50 bar (~700 PSI). Meanwhile the LPFP pressure is about 4,850-5,100 bar (~72PSI).

Car BMW F01, 740i, N54 engine.

Where to start looking for the problem?