Join Date: Nov 2002
Location: Melbourne's West
Mum had problem on her XF recently....
Was blocked jets. Turned the idle screw up all the way to keep it idling.
Have a look down the throat, and closest to the front of the engine, there is a jet. Should be spraying fuel in. Whereas mine the fuel was trickling in.
Carby needed a good clean and rebuild, problem solved.
It could be a number of other things, but our mechanic has seen heaps do this, just the jets getting gummed up with dirt and crap.
Funny thing was, it just happened all of a sudden, no real warning.