Odd idle and knock question

FlashPro questions & answers specific to the 2006-2011 Americas Civic Si
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omgu8myrice
Posts: 7
Joined: Sun Oct 04, 2009 4:18 pm

Odd idle and knock question

Post by omgu8myrice » Sat Oct 17, 2009 2:21 pm

So i have two questions here...

for one, my idle seems a bit odd. i can hear a ticking noise, but i have no knock and it goes away once the car is warmed up. also, I also sometimes hear a louder rumble mixed in with the smoother idle sound. i attached a datalog, does it look good?

2nd, when running the car harder, i get knock % values of up to 85%. i do not have any actual knock in any cylinder, though. Is that a problem? My tune is somewhat aggressive.
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cold idle.fpdl
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bgmayes
Posts: 6
Joined: Sat Oct 17, 2009 2:40 pm

Post by bgmayes » Sat Oct 17, 2009 2:56 pm

i was also noticing that k.level percent was getting up to about 85% at some points in pulls. does it have to reach 100% in order for there to be a knock recorded? or how should i interpret the k.level percent as a warning of getting close to knock?

ImAuthenticFTW
Posts: 78
Joined: Fri May 08, 2009 12:59 pm

Post by ImAuthenticFTW » Sat Oct 17, 2009 4:44 pm

bgmayes wrote:i was also noticing that k.level percent was getting up to about 85% at some points in pulls. does it have to reach 100% in order for there to be a knock recorded? or how should i interpret the k.level percent as a warning of getting close to knock?
dont use knock %, use the Knock Count that has been added for each cylinder

cheers007
Posts: 9
Joined: Tue Oct 20, 2009 6:29 am

Post by cheers007 » Tue Oct 20, 2009 6:32 am

What about the ticking sound. I'm recently noticing a ticking sound at idle and I've had FP for over a month now.

It doesn't sound so much as valve tap, but more like some emissions component like the canister purge solenoid (if this car has one) with a heavy duty cycle.

My 95 Dodge Grand Caravan with 3.8L V6 makes the same noise, and I feel and hear it coming from the purge solenoid, so I'm hoping my Si is doing the same.

Input on the ticking?

silverspoon1996
Posts: 46
Joined: Sun May 10, 2009 3:46 am

Post by silverspoon1996 » Tue Oct 20, 2009 4:48 pm

the injectors are noisey....

cheers007
Posts: 9
Joined: Tue Oct 20, 2009 6:29 am

Post by cheers007 » Wed Oct 21, 2009 6:00 am

Well, thank goodness it's only the injectors.

Thanks for the reply!

bgmayes
Posts: 6
Joined: Sat Oct 17, 2009 2:40 pm

Post by bgmayes » Wed Oct 21, 2009 4:25 pm

well then what is the knock % or k.level used for? trying to tune close to knock with out actually getting a knock it just seemed my understanding was correct? must not be just would appreciate further understanding of this

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