97 Chevy S10 noise from engine
Verizon Newsgroups
The truck runs just as it always has no performance problems. It has 117000
miles & I am the only owner. I always change the oil every 3000 miles.
They are telling me I need a new engine. Diagnosis is quote "a loose rod
knob crank lower end". I plan to have another mechanic check it out. Any
thoughts?
dahpater
If they told you it's "a loose rod "knob" crank lower end", they're
pulling your knob! lol
A bad rod "bearing" will make a knocking sound.
Rodan
I am the original owner. I change oil every 3000 miles.
It runs just as it always has; no performance problems.
I had it checked at the dealer for a rattle in the engine.
They tell me it has a "loose rod knob crank lower end"
and that I need a new engine. I will have another
mechanic check it out. Any thoughts?
_____________________________________________
Loose rod knob crank lower end ? But seriously.......:
Describe the rattle: the sound of the rattle, the intensity of
the rattle, the location of the rattle, what is happening when
the rattle appears, when does the rattle quit, does anything
change the rattle - something more than, "I have a rattle".
Good luck.
Rodan.
Verizon Newsgroups
the rattle when the starter first kicked from the rear of the engine.
Recently from the rear of the engine I could hear a slight rattle during
acceleration after starting (like a jar of marbles bouncing around inside).
It has become louder but still happens starting the truck & only when
accelerating.
If this helps this is how the mechanic listed the cause on the work sheet:
Rod Loose
Knob crank
Low end rattle rear engine
"Rodan" <Ro...@verizon.NOT> wrote in message
news:PvpEi.33$qV3.13@trndny02...
Bob Urz
What motor?
On my 2.2, i heard a rattle that i thought was a water pump.
8 bent valves latter, it turned out to be a bad cam chain tensioner
that was rattling around and it led to the chain jumping time
and killing my valves on a supposedly non interference engine.
Bob
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Rodan
I am the original owner. I change oil every 3000 miles. It runs just
as it always has; no performance problems.
After I had the rear seals replaced I noticed a slight rattle from the
rear of the engine when the starter first kicked. And I could hear
the rattle during acceleration (like a jar of marbles bouncing around
inside). It has become louder but still happens starting the truck
& only when accelerating. I had it checked at the dealer and
the mechanic said I need a new engine. He listed the causes:
Rod Loose
Knob crank
Low end rattle rear engine
I will have another mechanic check it out. Any thoughts?
_______________________________________________________
"Knob crank" could have meant "Knock crank".
A worn crank bearing will knock when started and knock during
acceleration, but get quieter when there is no acceleration.
A bad rod bearing will knock when there is no acceleration and
get quiet under acceleration.
A knock sounds like a hammer rapidly thumping the engine block.
Some loose hardware rattles and jingles under vibration or torque,
such as exhaust system parts. Rattles like marbles in a jar could
be a failing bearing in a water pump or some other belt-driven
accessory. A rattle like a can of gravel could be a sticking fan belt.
Having another mechanic check it out is a good idea. I think you
should also go back to the first mechanic and ask him to explain
what the thinks is the problem and why.
Good luck.
Rodan.
Verizon Newsgroups
"Bob Urz" <so...@inetnebr.com> wrote in message
news:1189263...@sp12lax.superfeed.net...
Hal
> the rattle when the starter first kicked from the rear of the engine.
> Recently from the rear of the engine I could hear a slight rattle during
> acceleration after starting (like a jar of marbles bouncing around inside).
> It has become louder but still happens starting the truck & only when
> accelerating.
If it was my truck I'd be headed back to the guy who changed to seals
to find out what he did wrong..like leaving out an endplay shim or not
properly tightening the flywheel/flexplate.
Chris
dahpater
> I first noticed the rattle after I had the rear seals replaced. Only heard
> the rattle when the starter first kicked from the rear of the engine.
> Recently from the rear of the engine I could hear a slight rattle during
> acceleration after starting (like a jar of marbles bouncing around inside).
> It has become louder but still happens starting the truck & only when
> accelerating.
>
> If this helps this is how the mechanic listed the cause on the work sheet:
>
> Rod Loose
> Knob crank
> Low end rattle rear engine
>
> "Rodan" <Ro...@verizon.NOT> wrote in message>
>
> - Show quoted text -
>From what your describing, it sounds like the inside of the convertor
has broken loose the casing. Very common problem on this year S10.
Steve W.
> I first noticed the rattle after I had the rear seals replaced. Only
> heard the rattle when the starter first kicked from the rear of the
> engine. Recently from the rear of the engine I could hear a slight
> rattle during acceleration after starting (like a jar of marbles
> bouncing around inside). It has become louder but still happens starting
> the truck & only when accelerating.
>
If the noise started after the rear seal was replaced I would say you
have a loose flex plate or converter bolt. Possibly even a cracked flex
plate.
--
Steve W.
Near Cooperstown, New York