08 Sierra Denali spark knock

radzer0 · Post by **radzer0** » Tue Feb 26, 2008 8:16 pm

I get the same thing. Ive asked before they blame the gas. Cant get BP down here so yea.

Mike, could you make a program for me that takes like 1 degree off the timing? I THINK this problem isnt gas but its actualy the 6.2L u guys don tget alot of feedback on.

And yes, i can hear it ping at full throttle depending on outside weather.

shrecewa · Post by **shrecewa** » Tue Feb 26, 2008 8:46 pm

Razer0, it sounds like you've got the same thing going on... I do want to get the truck dialed in as much as possible...and hope we can come up with a solution for the spark knock @ WOT. Tomorrow, I'm going to take a little drive to get some steady state data.

radzer0 · Post by **radzer0** » Tue Feb 26, 2008 9:37 pm

I had a hour long drive on my laptop i looked over. Im gonna have to see if i got it still but its at work right now so yea. Ill look tomorow.

shrecewa · Post by **shrecewa** » Wed Feb 27, 2008 2:33 pm

I did some driving this morning. I drove to warm up and let the LTFT's get set in (~30 minutes), then I started logging for ~20 minutes. I pulled into a gas station and run the DSLogRedux program, which said to adjust my injector slope down 10. I made the change to the truck...pulled out and drove another 20 minutes (with the laptop hooked up and logging just for info). After those 20 minutes, I started a new log of the truck with inj slope @ -10...and logged another ~20 minutes @ steady driving. I just run the DSLogRedux program on that file and the program recommended no changes. So, I'm about 40 minutes after the change to inj slope... I gunned it a few times with great throttle response. Recommendations?

Post by **06MonteSS** » Wed Feb 27, 2008 2:44 pm

sounds like you're headed in the right direction...

send me your latest log if you could please...

shrecewa · Post by **shrecewa** » Wed Feb 27, 2008 3:21 pm

I am having trouble uploading the log file...the forum tells me that I trying to upload an empty file...?? I'll try to figure it out. It is ~ 2MB... can I send it to you directly?

No matter what I try, I cannot make a file upload... even reviewed the file extensions page to ensure I was doin' it right. Tried a '.doc' a '.zip' a file with no extension and a '.log' file

They all give the same General error of trying to upload an empty file..?

Post by **06MonteSS** » Wed Feb 27, 2008 4:12 pm

yeah, email it to me at [email protected]

shrecewa · Post by **shrecewa** » Wed Feb 27, 2008 4:16 pm

sending the file, now. Thanks!

Post by **06MonteSS** » Wed Feb 27, 2008 4:58 pm

got it, thx...

replied..

shrecewa · Post by **shrecewa** » Fri Feb 29, 2008 11:11 am

Thanks Lew for your help with the log reviews. My truck is running/cruising a lot better, with the LTFT's running at around -3 to -1 in high gear @~65. I continue to watch them as I drive (haven't relogged any thing, just watching because my trips to work are only ~25min). The truck is so much more responsive,

.

Now, would like to dial in the PE ~ WOT figure out the spark knock. Any you folks out there have some recommendations on the spark knock problem?