Tuning out knock

[Bob Wooten]

Bob,

once you had the timing backed out back up a few hundred did you go back &
put the timing back in down stream & take the fuel back out?

BW

-----Original Message-----
From: owner-gmecm at diy-efi.org [mailto:owner-gmecm at diy-efi.org]On Behalf
Of Bob Valentine
Sent: Wednesday, March 21, 2001 10:47 PM
To: gmecm at diy-efi.org
Subject: Tuning out knock


Just a note.   Spent some time trying to get rid of detonation in the
2000rpm range at WOT, yanking spark and adding a good bit of PE fuel
helped, but still got a little every now and then.

Found some old notes about that "true detonation, once started, is hard to
stop".  Exactly the problem I had.    Dropped a few points of timing out a
few hundred RPM *before* I was detecting knock.

Problem gone, now pulls hard thru the 2000-3000 rpm range.  Still need to
do some plug checks to verify knock is REALLY gone.

-> Bob Valentine
-> bob at tecmark.com
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