E55 AMG Knock
-water pump blew = replaced it with a new one from mb
-found sludge in oil = condensation .. just did 4 oil changes
- oil only had about 4-5 L < when drain from previous owner
-coolant is being burnt out of the exhaust = sweet smell out of the exhaust a bit of white smoke not to much>? loosing coolant ? no leaks just painted garage floor not a single drop (hg) maybe?
- after all this i hear a knock and im shocked.. engines idles smooth i know these engines are loud buddy of mine owns one beats on it... i own a r32 gtr known for there knocks this knock is ab normal only happens on load , or when idles at 2000 - 4000 rpm
engine runs smooth idles smooth
here is a video
let me know your thoughts and what i should do ... already got quoted 10-16k for a full engine rebuild honestly do not see it worth it unless im keeping the car and go all out .. cannot find a single parts car through out Canada for a new engine.

E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
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