Hey all, my 190d 2.5na has intermittantly been making a ticking noise at idle. It comes and goes with no pattern. I have isolated it down to ticking with the pulse of number 4 injector line. Car runs great, all my other fuel problems are fixed. It seems to have started after filling up at a station I have never been to. I am also out of conditioner right now and did not ad any to the tank for the first time. the car had 380,000km when the odometer stopped working.

My understanding is the valves require no adjustment.

No comments about my WVO woe's. I have been running dino the past few tanks. I started running running WVO again today, sounds the same.