Recent KR events take me by surprise...

[stevessvt]

Put $20 in gas in my bone stock (except sec cat del) 09 MS3 and drove it 40 miles on Sunday. About 15 miles in I honk on it to pass a car in 6th going about 75 and my DH flashed a KR event. But I didnt what kind of number it was.
Was driving today about 60 and rolled in 6th and about 3 seconds in it flashed a KR of 7, and I heard a knock! WTF?!? Now Im scared shitless Im going to be driving it sometime and throw a piston. I know its a little over dramatic of me, but still, its never thrown a KR any where near that high before. In fact, I dont know when the last time it threw a KR of more than 1. Maybe I just got s*** gas? Oil level it right up there (infact, at the M in max because I guess it was over filled a bit 2000 miles ago).
Should I worry?

 

[GoFast]

bad gas? rolling too hard in 6th?

 

[8.5MS3]

do a dh log and lets see how everything looks

rpm
afr
kr
boost
commanded afr

 

[stevessvt]

I am bone stock except for second cat delete,...so no tuning down to stock air filter. I have rolled hard in 6th many, many times previously with only a KR of .4. I just filled up from 3/8 tank to full today after this latest KR event with BP. Put Mobil in on Sunday, right before the first KR event.

 

[stevessvt]

So am I being a drama queen and shouldnt worry about it?

 

[bykeryder4life]

anything over two degrees KR is cause for concern. be worried.

 

[stevessvt]

Well, I tightened down as many hose clamps as I could hoping that would help. Set up the DH to data log. I havent done any logging in some time, so I forgot how. I started it and nailed it, not realising it takes a few seconds for it to start. 3 seconds later 'PING!' Only it hadnt started logging yet. Which is just as well as I remembered later that the MSD software doesnt work correctly on Vista, let alone Win 7 I have now.

 

[hugador]

Why such a high gear for 60mph. Trying to save gas? Save your motor and keep it in 5th. If you rolled to 6th because you were going to go faster then wait untill you hit 70mph then roll. Well thats the way I drive without getting kr in 6th.

 

[coyfish]

Just keep an eye on it. The KR detector is sensitive on this car and often gives false readings. Could be bad gas but or bad sparks.

 

[MS3 GT]

whats Knock Retard??sorry for being a noob...

 

[matsuda]

Put $20 in gas in my bone stock (except sec cat del) 09 MS3 and drove it 40 miles on Sunday. About 15 miles in I honk on it to pass a car in 6th going about 75 and my DH flashed a KR event. But I didnt what kind of number it was.
Was driving today about 60 and rolled in 6th and about 3 seconds in it flashed a KR of 7, and I heard a knock! WTF?!? Now Im scared shitless Im going to be driving it sometime and throw a piston. I know its a little over dramatic of me, but still, its never thrown a KR any where near that high before. In fact, I dont know when the last time it threw a KR of more than 1. Maybe I just got s*** gas? Oil level it right up there (infact, at the M in max because I guess it was over filled a bit 2000 miles ago).
Should I worry?

Take it easy until you use up that tank of gas and then perhaps try a different brand.

 

[stevessvt]

Why such a high gear for 60mph. Trying to save gas? Save your motor and keep it in 5th. If you rolled to 6th because you were going to go faster then wait untill you hit 70mph then roll. Well thats the way I drive without getting kr in 6th.

I've always driven it this way without any problems in the past. I know it's real knock because I can hearthe detonation and feel the car lose power.

 

[stevessvt]

I guess what I'm looking for is whether or not in these 3 KR events has likely caused permanent damage already and the clock on this time bomb has begun?

 

[8.5MS3]

I guess what I'm looking for is whether or not in these 3 KR events has likely caused permanent damage already and the clock on this time bomb has begun?

spend the cash n get a compression test. if it checks out your fine. if not, time to trade in or go forged while the block is still in one piece

 

[Silver Ecstasy]

As long as you arn't getting audible knock, KR on this car is 100% normal, for emissions purposes.

And stop boosting in 6th gear. You shouldn't load the engine like that under 3,000 rpms.

/thread

 

[8.5MS3]

Was driving today about 60 and rolled in 6th and about 3 seconds in it flashed a KR of 7, and I heard a knock! WTF?!? Now Im scared shitless Im going to be driving it sometime and throw a piston. I know its a little over dramatic of me, but still, its never thrown a KR any where near that high before.

I started it and nailed it, not realising it takes a few seconds for it to start. 3 seconds later 'PING!'

As long as you arn't getting audible knock, KR on this car is 100% normal, for emissions purposes.

And stop boosting in 6th gear. You shouldn't load the engine like that under 3,000 rpms.

/thread

reread the thread.....

 

[Silver Ecstasy]

Sorry, I interpreted 'PING' as referencing to a Dash Hawk alert. I did miss the first reference to audible knock. But thank you for organizing the quotes accurately lol.

I say keep forcing it to knock and blow your engine up under warranty. Because trying to fix it on your own is going to give you an ulcer.

 

[8.5MS3]

^^^unfortunately...i have to agree^^^

 

[Silver Ecstasy]

Seriously, he's better off consistently knocking it to the point a rod shatters so he can take it in and get a free new engine. Because at this point, audible knock means damage is already done and there's nothing you can do about it now.

Especially with the knock being so damn mysterious to begin with, you might as well contribute to their scientific research and chuck the engine, because saving it only means less future answers for us ROFL.

Take one for the team b****! LOL

 

[coyfish]

Man you guys are jumping to crazy conclusions. Maybe he got some bad gas or his spark plugs are bad. My god you guys are going over the top. His DH picked up a few high knocks and hes done . . . he should sell his car . . . or blow it up un purpose . . . . really??

What do you mean by audible knock??? If its knocking constantly than you have a bent rod. That means you will hear it popping around at idle. But if you felt / heard hesitation that means you got some knock. In no way is that indicative of a bent rod. If thats news to you than you should go google what Knock is.


I would stick some octane booster in your gas tank. If you still get knock then its time for new spark plugs. If you are still knocking after that than you should start worrying.