I've been reading some posts which appear to be relevant but being a real layman need someone to tell me whether the conclusions I'm reaching are right?
My 330d SE auto 2003 has developed a warm start problem. Always starts fine from cold but intermittently from trying to start from warm/hot the engine turns over but does not fire. Repeated cranking makes no difference. If left to cool for 30-45 minutes it then fires/starts again. Can be very inconvenient!
The local independent BMW garage has looked at it, can't seem to tell me for definite what the cause is, so far they've changed the fuel filter and have cleared some error codes as quoted on invoice -
"1260 Pre supply pressure below min value, and
09FG (think they mean 09F6) - rail pressure monitoring"
However, the problem is still there. In addition, I've noticed that if I kick down on the accelerator hard to full throttle the engine becomes jerky, and loses power until I back off the accelerator.
Am I right in thinking (from other posts I've read) that this is most likely to be the inline fuel pump that's causing the problem, rather than the fuel pump sensor (which supposedly has an error code of its own, and would also not show any codes for rail pressure issues as the pressure would actually be normal)?
Or could it be faulty injectors, in which case I need to have a injector leak off test, is that right?
Or is it some other cause?
Any advice gratefully received, I've seen some horror stories where people are replacing one thing after another (e.g. camshaft sensor, crankshaft sensor) to try and solve this problem and still seem unable to do so - would like to avoid doing this really!