I have a 2000 Discovery 2 V8 with 51.000 on the clock.
A couple of weeks ago in the very cold weather I noticed an engine knock
after starting. What happens is, I start the engine in the morning, no
problem, no unusual noise. I then put it in gear (auto) which reduces the
engine speed and loads the engine and it starts to knock, take it out of
gear and the knock stops. running the engine for a couple of minutes means
you can drive away, no knock, no problem for the rest of the day.
At first I thought it could be a hydraulic tappet issue but the knock sounds
a bit deep for that although I would be quite happy if someone says that is
how they sound.
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