Loss of power / Fuel pump issues?

[hamza]

Hi all,

did a nice 2000 mile trip around Europe in the last month with the family in the 4.8is. Overall it went very well and the car performed great.... except on the last 50 miles on the way back home.

On the motorway, cruising at about 70mph, i notice the motor hesitate/ splutter once or twice but then cleared up. No lights on the dash. Short while later, lose all power and had to pull over to the hard shoulder (or rather just lane 1 as this was on the M25, a new fangled "smart" motorway without an emergency lane).

Engine cuts out as soon as the car comes to a stop. Won't restart. 1/4 tank of fuel in the car still and have literally just driven about 800miles or so over the last 24hrs so fresh fuel too. Still no warning lights on the dash.

The police kindly tow us off the motorway. They tried starting the car again too. Nothing. Tow truck comes a while later, still won't start so they recover us to the nearest petrol/service station. Here another recovery patrol joins us. Its about 2hrs now since the initial breakdown.

Recovery mechanic plugs into OBD. No errors. Tries starting it... coughs and splutters a bit which is more than what we had before. I get him to try again and a few attempts later it does actually start. Runs rough for a short while before settling back into normal idle. Couple of misfires on two cylinders on the OBD readout now but no further errors.

They towed us back home anyway and I have since used it for a short 1 or 2 mile trip locally and it seems to be running fine.... Not sure I'd want to trust it for another long trip like this though.

Any ideas as to what might actually need doing? Recovery mechanic suggested fuel pump.