Hi, I have a 2008 Ford Fiesta 1.4 TDCi. It's a lovely little car and when it runs smoothly, is great to drive. However...sometimes when driving, at anyspeed, gear etc. it will hiccup or jump/jolt and then continue driving. One time the dashboard light which is an orange cog with a '!' in the middle of it came on and stayed on so I pulled over, turned off and got towed home. I took it to my trusted garage who replaced one of the injectors but that has still not fixed the problem. Now in the mornings when I turn it on, the same dash light comes on. I have an OBDII reader with Ford specific capabilities but it is not showing any fault. The light will then eventually go off but the issue of hiccupping still remains. The fuel rail pressure dips by a tiny fraction when it hiccups during driving but no other obvious thing shows up. I can see from the internet that this seems like a common problem with these cars but no one really has any answers on where to start looking for the problem or how to fix it. Any help would be very much appreciated!