So I was driving my 2007 Focus 1.6 TDCI (98000miles) and while it was still cold, it sort of misfired and then when I stopped at the lights (still cold) it died. Starting it took a couple of attempts. I tried to replicate this morning and could not get it to do the same. What could this be related to?
I had removed the DPF, cleared the EGR, and recently replaced injector seals, heaters, clutch and crankshaft pulley. I also dosed a bottle BG244 a couple of fuel fill ups ago. The only thing which came to mind is a clogged fuel filter since the current one is approaching the 10k mark. I know everyone says that this should be changed every 10K or 1 year (and thats what I am planning this week or the next) but Ford actually say it can be changed every two years so I guess it cant be because of that? Oil (and filter) is approaching 5K miles so I am changing that as well. I have not had any error codes except "overboost condition" which I have had for a few months and planning to clean the turbo vanes.
Any thoughts on this one?