Fuel filter change is not in service schedule for petrol engines so it's probably have never been changed.
Is it maybe loosing fuel pressure, leaking air in fuel system when parked for prolonged periods of time. Or leaking injector slowly letting fuel in manifold which builds up while stationary and causes mixture to be too rich at startup until it vents out.
Or possibly one of temperature sensors is giving wrong readings.
__________________
Currently 8less
2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D
8 history:
2006 A8 Sport 4.2TDI quattro SOLD,
1997 S8, reached end of life with gearbox failure
|