I would say camshaft,cause a friend of mine have a 1993 190 too and got the
same problem a couple of years ago,he got the suggestion to get a new one
from a mechanic at the MB Garage.
It helped it sounded like a new car after the change.
Regards
"EVO-X" <posted@[EMAIL PROTECTED]
> skrev i meddelandet
news:2%6qh.13863$X72.9229@[EMAIL PROTECTED]
>
> 93' 190E 2.3 Automatic
>
> It has this tapping rapping not quite a knock sound, except when you're
> starting it, it's sounds terrible when it's being cranked.
> Then after it starts it runs fine except for the tapping, it's louder
than
> just a tick tick like a tappet, but it's not a real heavy metal to metal
> thunk thunk either, except when cranking to start.
>
> The thing about it is, if the engine is under a load, accelerating or if
> you brake and run the engine up over 1.1k or 1.2k, the noise just goes
> away, or at least is almost undetectable. It is noticable at idle,
louder
> when decelerating, and loudest when cranking to start.
>
> I've had it to the MB Master Tech. Had the bottom end checked, put in
new
> rod bearings. Didn't help. Everything else looked fine. Compression test
> and leak down were good. Had the oil analyzed for metal particles, it
> seemed fine. It doesn't miss or anything. It doesn't use much oil or
> water, a little but nothing out of the ordinary for a 14 year old car.
It
> runs fine, except the noise.
>
> To me it sounds like it's right in the middle of the engine at cylinder
#
> 3, but I'm no tech.
>
> This thing has people stumped all over the east coast, and no one wants
to
> say for sure what it is. Of course they won't mind charging to take the
> engine apart and start replacing things until they get it right, but I'd
> like someone to know for sure what it is BEFORE they start into it.
>
> Any thoughts on this ???
>
> Thx
>
>
>
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