Changed Glow Plugs, now loss of power!
Last week I changed my glow plugs and when I ran it all of a sudden power dropped and the engine was running rough. I tightened the clamp on the hose going into the turbo and everything came back to normal. I drove it for a couple of hours then the next day the yellow service engine light came back on and have a drop in power again. It idles rough and I'm really only topping off at 70 mph. I re tightened the boots and clamps but still running rough. Any Ideas on where to start to look.