[T3] Missing Messages (Clutch dept.)
Jim Adney
jadney at vwtype3.org
Sat Mar 24 18:00:00 PDT 2012
On 24 Mar 2012 at 16:06, J. Jonik wrote:
> The rattle noise DOES go away when the clutch is depressed a few
> inches.
In that case, it could either be a squeak where the throwout bearing
rubs on the pressure plate, or it could be something related to the
engine main bearings, something that changes as the crankshaft is
pushed to the rear as the pressure plate gets depressed.
Watch the pulley with the engine running and get someone to depress
the clutch while you're watching. Can you see the pulley move to the
rear? If things are in good shape you should not be able to see any
movement, other that the rotation.
> Secondary question is...IF clutch cable needs adjustment, isn't that a
> sign of it stretching, maybe fraying, somewhere near a breaking point?
> (I'm keeping a spare cable in the car anyway.)
If it suddenly becomes necessary to depress the clutch much more than
before, that's a sign that strand(s) have broken and you should
replace it now. Normal wear of the clutch will slowly move the
operating point of the clutch up, not down.
> Third...what IS the sound of a valve going bad?
No sound from the valve. If the valve burns and leaks, you might hear
a slightly different exhaust note, from gas whistling out thru the
burned area. If you did a compression check and found one cylinder
significantly low, that's a possible bad sign, but that can have
other causes, too. For most people, valve problems occur without
warning.
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Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
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