I've had several weeks of trouble free driving, other than a few water and oil leaks that I'm pretty sure are just due to hoses that I have been tightening here and there.
However, I'm bothered by a few things.
First, I can barely get 21 mpg on the highway.
Second, the knock/ding/ringing bell sound that I've mentioned before is still annoying me. Imagine tapping on the front cover with a small hammer. That's where it sounds like it is coming from, usually from the water pump area. The thing is, I don't think it is always there. The rest of the engine is so loud that it's difficult to pick the sound out from the rest a lot of times. But when it is there, it is so loud that standing over the radiator with the bonnet up actually hurts the ears. When I use the stethoscope, it becomes difficult to hear.
The thing is, along with this sound, something else that is either here or not for no particular reason, is that the engine sometimes seems to run rough... well, it runs just fine, but some days it is just louder and more diesel-engine-rough than other days. Just today, going one way for ten miles was rough and loud, but after sitting for a half hour, the same drive back was much smoother. The vehicle does not perform any different one way or another, it?s just more annoying.
The video below is at warm idle, and although it is probably difficult to hear, the ring/knock can be heard during the last five seconds or so as I pan back towards the water pump.
https://flic.kr/p/YUXYRm