Hi I have a 2012 that I recently had to change the fuel filter on after getting some water contaminated fuel. I replaced the fuel filter and all was good for a couple of hundred k's . Now after the car has been sitting for 5 or 6 hours I get it started and moving but after a kilometre or two it shuts down . If I crank it for a number of times it starts and runs perfectly for the rest of the day.
I am assuming it has a slight air leak somewhere and after enough time it has drawn in enough air to cause it to stop.
I pulled filter out inspected it and saw no obvious problem so I refitted again and it continued to stop after sitting. Ok I thought ...maybe the fittings are the issue so I decided to try and isolate the problem. I started with the water sender in the bottom of the filter , I got a 12x1.25 bolt added some o rings and refitted to see if the plastic thread on the water sender was the problem, alas not same symptoms. There are no signs of diesel leaking any where are the filter assembly at all, wondering about he fitting the filter screws into but just going out and buying one to teat the theory could be an expensive idea, is there anyway to test if the leak is coming from there ? I have wondered about the sealing capabilities of the connectors on the hoses from the filter itself ......the push button to release fittings dont fill me with confidence....any other ideas ? Thanks for any advice.