one day after about 50 miles of perfect driving the rover randomly bogged down, i couldnt accelerate, and i coasted into a lot. i limped her home at low rpm, replaced my wires, distributor and rotor, found some intake leaks so i replaced the gaskets the timing was WAY wrong so now the timing is right everything is cool. no. now i have a clank in the left side (even side) of the block, i removed fuel injectors to see what cylinder it was.. when i un plugged them NOTHING happened no change in idle nothing.. i check my plugs, 3 of 4 of them looked brand new and one is black.. 5 cyl range rover? took off injectors the stupid o rings and rotted so in all got rid of intake leaks and misfire.. i think but now i have a knocking that just appeared and gotta fix it she idles okay but not great bad injectors? carbon build up? something!? knocking is not loud like something is going to break though block but more like engine had no oil for the past 20 years (but it does and is regularly maintained) for the past 5 years any body help!