Re: Knock @ 1975 RPMs

[Scot Sealander <Sealand@clarityconnect.com>]

Barry Tisdale wrote:

> Obviously, this is of electrical or mechanical origin - no wiring changes,
> so must be the sensor 'hearing' something relative to the cam or stiffer
> valve springs that its filter circuits interpret as knock.

Why not try and record what the knock sensor hears?  Put a cassette tape
recoder in the Sy, connect it to the knock sensor, and record what the
knock sensor hears.  Take the tape in the house and listen to it, and 
see if any of the sounds are things rattling that you might recognize
the source?

Scot Sealander
----------------------------------------------------------------------------
To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
in the body of a message (not the subject) to majordomo@lists.diy-efi.org