Vibration

[Ero Rademer]

Jukka Majanen wrote:
>>
 There is one problem in that MC-engined car -motor vibration.
 It starts at 3.2k, nothing under it, gets a little smaller after
 3.5k. It is a high frequency vib that can be felt on the clutch
 pedal and is also audible, but doesn´t shake the balls off. 
<<

Hi!

Sorry, no solution. This description just remembered me on my
'87 5-cyl emgine (KP) I owned. After the recommended timing belt
change (at around 90.000 mls) I heared and feeled such a (very)
tiny vibration in a small rpm band. I returned to the shop after
the test drive, they checked timing belt tension and found
everything ok.

The change was on a very hot summer day, on a coolder autumn
day I recheck the belts and found the PS pump and alternator
belts a little too tight (just "feeling" with closed eyes, you
know what I mean). I loosened the PS belt a little and I'm
not sure I that solved it completely, but that day I thought
(or imagined) it.

The engine ran flawlessly the next 150.000 mls except an
alternator bearing failure at around 120.000 mls.

So long!
Ero.
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