Greetings from a rank newbie who doesn't even have an Izuzu...
The husband of one of my wife's co-workers called today for help with his
recently purchased 2000 Rodeo. (I can't believe I am involved, but that's
another story.) He bought the Rodeo from a private party a couple months
ago, and last night it developed a worrisome tapping sound. The problem
was
not apparent when he started his five mile trip in town but he heard it
when
he parked. The sound has not changed in intensity, and is the same warm as
it is cold.
I met him at a local parking lot, and he's right: it is loud and
worrisome.
It is a sharp, light tap that is twice the rate of a rod knock and doesn't
have the deep thunk that rod knocks have. It is plainly audible fifty feet
away under conditions that carry a voice only twenty feet. The sound is
much
louder under the engine than above, and remains the same when I disable
cylinders one at a time. The oil level is decent (1/2 qt low) and the oil
appears to be a couple months old - probably changed before it was sold.
I advised him to mimimize his driving and stay off the freeways until he
could get it to a real mechanic to determine exactly what is knocking. I'm
concerned a rod end cap may have broken at one end.
Does any of this ring a bell?