On Thu, 30 Nov 1995, Glenn Mapes wrote:
>
> Try removing a spark plug lead, one at a time, while the engine is running
> and note the sounds the engine makes. If the knock goes away or the sound
> is reduced while the plug lead is disconnected then you have at least
> located the cylinder that has the problem.
>
> You could then attach a timing light to that plug (after reconnecting the
> plug lead) and use the strobe flash of the light as a 'sync' to the noise.
> If the noise occurs every time the light flashes then I would say the
> problem is a rod bearing; if, however, the noise only occurs every other
> flash then the problem would be in the valve train.
Great idea, using a strobe, didn't think of that!
If it is really the case, though, (as somebody previously mentioned) that
you hear the rod knock only on the combustion stroke, you are back to
sqare 1 (or draw the wrong conlusion from the test...)
Ulix
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