Engine sounds like a diesel

Tom Ion wrote:>

My 90 xj40 4.0 runs great but sounds like a diesel when idling. While
listen with a stethescope I have decided most of the clatter is coming
from the timing chain area. The valves sound very quite in comparison.
Their is the fuel injector ticking as well as the thump from the fuel
line that I plan on solving soon but my concern is the clatter from the
timing chain area. Could it be my tensioner is weak. The engine runs
great and become very quite when reved!! Tom Ion 90 xj40 4.0 77,000