Knock retard
Thread Starter
TECH Enthusiast
Joined: Jul 2003
Posts: 734
Likes: 7
From: Imperial Valley, CA
Knock retard my friend's 01ss a4 does this at wot. its "suppose" to be a new engine that was installed under warranty. now, where does this knock retard come from? why does it happen? dont have any experience with it myself. 
It could be false knock from banging exhaust or suspension parts. Put some race gas in and see if it goes away. If it does it means that he needs to lower his spark advance b/c that's true knock.
TECH Addict
Joined: Mar 2004
Posts: 2,336
Likes: 0
From: Fat Chance Hotel
Lead is lead. Put enough into the exhaust and bye bye O2's and cats.
A good octane booster might be a safer choice. Ultimately, the higher octane like you suggested might help diagnose the problem. There might be a custom tune that is causing so much grief...(too much timing). Or there is excessive carbon buildup which could possibly be alleviated by some top engine cleaner.
A good octane booster might be a safer choice. Ultimately, the higher octane like you suggested might help diagnose the problem. There might be a custom tune that is causing so much grief...(too much timing). Or there is excessive carbon buildup which could possibly be alleviated by some top engine cleaner.
Mine pulls 4 degrees at WOT...They say that sometimes the springs can be noisy and the sensors will pick it up... according to Comp. I think mine is problems with a lifter...I will find out in a couple of weeks
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Originally Posted by technical
Lead is lead. Put enough into the exhaust and bye bye O2's and cats.
A good octane booster might be a safer choice. Ultimately, the higher octane like you suggested might help diagnose the problem. There might be a custom tune that is causing so much grief...(too much timing). Or there is excessive carbon buildup which could possibly be alleviated by some top engine cleaner.
A good octane booster might be a safer choice. Ultimately, the higher octane like you suggested might help diagnose the problem. There might be a custom tune that is causing so much grief...(too much timing). Or there is excessive carbon buildup which could possibly be alleviated by some top engine cleaner.
did your friend put an aftermarket maf on the car? some of those have been known to do some messed up things.
TECH Regular
Joined: Sep 2004
Posts: 404
Likes: 0
From: Raleigh, NC
I had 4KR also under WOT. Don't have it anymore but not sure what was causing it. Got my computer tuned which was needed cause it was running a little lean 14.0 at WOT. And I added a 160 thermostat. Before I did anything I would not have KR if I would get on it while it was not up to normal temp. I think the thermostat helped the most.
TECH Regular
Joined: Sep 2004
Posts: 404
Likes: 0
From: Raleigh, NC
Octane is not the only way to get rid of knock. I wanted to get rid of knock all together. High dollar octane may work at the track, but like the rest of you, my car sees WOT quite often on the street.
Teching In
Joined: Jan 2002
Posts: 45
Likes: 0
From: las vegas
I have a question to about KR, occasionally at WOT I am seeing 8.5 degrees of KR but it only happens maybe 1 out of 5 WOT runs. Sometimes it's there and sometimes its not???? Is this false knock??? I have backed off the timing to 12 degrees and it still shows up???? By the way, I am not hearing anything when I am seeing the KR.
I have a 408 iron block with JE pistons, Callies crank, Oliver rods, dual springs with comp lifters, hardened push rods, ect...yada yada. I have tried just about everything and I can't get rid of the KR!!!!
I have a 408 iron block with JE pistons, Callies crank, Oliver rods, dual springs with comp lifters, hardened push rods, ect...yada yada. I have tried just about everything and I can't get rid of the KR!!!!
TECH Addict
Joined: Mar 2004
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From: Fat Chance Hotel
Originally Posted by dale5050
I have a question to about KR, occasionally at WOT I am seeing 8.5 degrees of KR but it only happens maybe 1 out of 5 WOT runs. Sometimes it's there and sometimes its not???? Is this false knock??? I have backed off the timing to 12 degrees and it still shows up???? By the way, I am not hearing anything when I am seeing the KR.
I have a 408 iron block with JE pistons, Callies crank, Oliver rods, dual springs with comp lifters, hardened push rods, ect...yada yada. I have tried just about everything and I can't get rid of the KR!!!!
I have a 408 iron block with JE pistons, Callies crank, Oliver rods, dual springs with comp lifters, hardened push rods, ect...yada yada. I have tried just about everything and I can't get rid of the KR!!!!