2QUIK6

Just wondering if the timing could be too retarded to cause a false Knock?
Seems that I see up to 20 degrees of KR sometimes on the scan tool when I'm almost coasting, barely depressing the gas. If I depress the accellerator further. the KR goes away??
I've looked everywhere and don't see anything hitting anywhere and I don't hear any pinging when this happens.
Only thing that looks suspisious on the scan tool is that the timing advance seems low sometimes before the KR begins.

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Rob
High Performance & Party page
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89 TTA #426 20th Anniversary turbo 3.8 bone stock
79 TA 6.6l - all original stock
94 Silverado Tuned Port Injected
87 Grand National- lil' ole V6, 12.40 @ 108 w/1.79 60'
95 Trans Am Conv.- LT1

82z

What do the knock counts say?

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82 z28 350cid, vortec heads, comp 262h cam, Holley 600cfm carb, 2in twice pipes, MSD ignition, turbo 350 trans, 3.73 posi, manly b&m megashifter

2QUIK6

Knock count is only how many times the sensor detected knock, goes up by 1 or 2 every time the KR is not 0.0. The KR can be anywhere from about 5 to 17 degrees usually when this happens, which is enough to be able to hear usually.

airdeano

2quik6,
ohm the knock sensor to ground. 3500-3900ohm
is good. more or less.. replace. if factory
base is 6.. safely go 10. anything past 10
and it is possibly for over timing. the timing
curve generally had +19 to +45* advance.
depending on MAF or MAP input. most cammed
engines ill rip all but 4* retard. so mapping
the timing curve is critical.
hope this helps...
airdeano

2QUIK6

Thanks airdeano, I was about to change the knock sensor, I'll check the ohms on it.
My base timing is currently at 6 degrees.
Not sure what you meant by
"most cammed
engines ill rip all but 4* retard." ??