43 Counts of Knock!!

[92Talon251]

My car in the past week was running really good but at the start of this week things where getting bad real bad car was starting to pick up Huge counts of knock! this is on a daily drive i just let the car idol for 30 secs after starting and set my palm on log every thing was reading about right at idol but i will let the log speak for it self.

My setup is Big16g stock, 2.5inch exhaust (complete) /w high flow cat 3 inch intake act 2600 clutch boost controler set at 8 psi daily drive i am on Stock fuel system, dont have SAFC-II



This is a standerd accel from 1 to 2nd to 3rd ect

Daily drive to work

RPM | INJP | Knock | TIMA | O2-F | AirT | FTRM | FT02 | MAFS |
1625 2.55 0 20 2.94 78.9 98.4 100% 94.3
1812 4.60 1 28 2.94 79.7 98.4 100% 182.4
1968 3.83 0 31 2.94 79.7 98.4 71.8% 188.6
1843 4.09 0 30 2.94 79.7 98.4 75.7% 188.6
1812 4.35 0 29 2.94 79.9 98.4 86.7% 188.6
2031 4.35 0 31 2.94 79.7 98.4 64.0% 182.4
2250 3.83 0 32 2.94 79.7 98.4 80.4% 194.9
2218 3.58 0 33 2.94 79.7 98.4 73.4% 188.6
2312 5.88 1 27 2.94 80.4 98.4 85.1% 289.3
2906 5.63 0 29 2.94 80.4 98.4 103.9% 352.2
3250 6.14 0 32 2.94 80.4 98.4 84.3% 446.5
3406 6.14 0 29 2.94 80.4 98.4 64.8% 522.0
2781 7.16 0 28 2.94 80.4 98.4 66.4% 490.6
2343 7.93 0 23 2.94 80.4 98.4 85.1% 446.5
843 2.30 0 10 2.94 82.0 98.4 101.5% 44.0
843 2.30 0 10 2.94 82.0 98.4 96.8% 50.3
1093 5.63 0 12 2.94 82.0 98.4 100.0% 132.0
2125 5.37 12 24 2.94 82.0 98.4 97.6% 270.4
2531 5.37 37 20 2.94 82.0 98.4 114.8% 301.9
2312 5.63 43 14 2.94 82.0 98.4 108.5% 308.2
2000 6.39 42 8 2.94 82.0 98.4 109.3% 314.4
2000 6.91 43 5 2.94 82.0 98.4 100.7% 320.7
2187 6.39 43 8 2.94 82.0 98.4 103.9% 352.2
2468 6.14 43 10 2.94 82.0 98.4 89.0% 396.2
2687 6.65 42 11 2.94 82.0 98.4 82.0% 434.0
2906 6.39 42 12 2.94 82.0 98.4 83.5% 471.7
3156 9.47 42 12 2.94 82.0 98.4 71.0% 610.1
3437 11.77 41 9 2.94 82.0 98.4 100.0% 704.4
3718 2.30 28 20 2.94 82.0 98.4 86.7% 220.1
3718 4.60 41 10 2.94 82.0 98.4 100.0% 729.6
2812 1.53 0 39 2.94 82.0 98.4 82.2% 94.3
2437 0.00 0 38 2.94 82.0 98.4 100% 81.7
2687 7.42 1 27 2.94 82.0 98.4 124.2% 452.8
2656 7.67 0 24 2.94 82.0 98.4 122.2% 471.7


That was from 1st to 2nd to 3rd about 1 min of logging the rest of the drive was similar to this I was reading 43 counts of knock about the same RPMS.
(note I do have lifter tick I should be getting the new 3g lifters tommorow I will put em on this weekend)

Thanks guys

 

[Mellon]

what kind of timing are you seeing during this?

 

[92Talon251]

Let me clean this up a little bit so it ant so crowed

RPM | INJP | Knock | TIMA | O2-F | AirT | FTRM | FT02 | MAFS |
1625 | 2.55 | 0 | 20 | 2.94 | 78.9 | 98.4 | 100% | 94.3
1812 | 4.60 | 1 | 28 | 2.94 | 79.7 | 98.4 | 100% | 182.4
1968 | 3.83 | 0 | 31 | 2.94 | 79.7 | 98.4 | 71.8%| 188.6
1843 | 4.09 | 0 | 30 | 2.94 | 79.7 | 98.4 | 75.7%| 188.6
1812 | 4.35 | 0 | 29 | 2.94 | 79.9 | 98.4 | 86.7%| 188.6
2031 | 4.35 | 0 | 31 | 2.94 | 79.7 | 98.4 | 64.0%| 182.4
2250 | 3.83 | 0 | 32 | 2.94 | 79.7 | 98.4 | 80.4%| 194.9
2218 | 3.58 | 0 | 33 | 2.94 | 79.7 | 98.4 | 73.4%| 188.6
2312 | 5.88 | 1 | 27 | 2.94 | 80.4 | 98.4 | 85.1%| 289.3
2906 | 5.63 | 0 | 29 | 2.94 | 80.4 | 98.4 | 103.9%| 352.2
3250 | 6.14 | 0 | 32 | 2.94 | 80.4 | 98.4 | 84.3% | 446.5
3406 | 6.14 | 0 | 29 | 2.94 | 80.4 | 98.4 | 64.8% | 522.0
2781 | 7.16 | 0 | 28 | 2.94 | 80.4 | 98.4 | 66.4% | 490.6
2343 | 7.93 | 0 | 23 | 2.94 | 80.4 | 98.4 | 85.1% | 446.5
843 | 2.30 | 0 | 10 | 2.94 | 82.0 | 98.4 | 101.5% | 44.0
843 | 2.30 | 0 | 10 | 2.94 | 82.0 | 98.4 | 96.8% | 50.3
1093 | 5.63 | 0 | 12 | 2.94 | 82.0 | 98.4 |100.0% | 132.0
2125 | 5.37 | 12 | 24 | 2.94 | 82.0 | 98.4 | 97.6% | 270.4
2531 | 5.37 | 37 | 20 | 2.94 | 82.0 | 98.4 | 114.8%| 301.9
2312 | 5.63 | 43 | 14 | 2.94 | 82.0 | 98.4 | 108.5% | 308.2
2000 | 6.39 | 42 | 8 | 2.94 | 82.0 | 98.4 | 109.3% | 314.4
2000 | 6.91 | 43 | 5 | 2.94 | 82.0 | 98.4 | 100.7% | 320.7
2187 | 6.39 | 43 | 8 | 2.94 | 82.0 | 98.4 | 103.9% | 352.2
2468 | 6.14 | 43 | 10 | 2.94 | 82.0 | 98.4 | 89.0% 396.2
2687 | 6.65 | 42 | 11 | 2.94 | 82.0 | 98.4 | 82.0% 434.0
2906 | 6.39 | 42 | 12 | 2.94 | 82.0 | 98.4 | 83.5% 471.7
3156 | 9.47 | 42 | 12 | 2.94 | 82.0 | 98.4 | 71.0% 610.1
3437 | 11.77| 41 | 9 | 2.94 | 82.0 | 98.4 | 100.0% 704.4
3718 | 2.30 | 28 | 20 | 2.94 | 82.0 | 98.4 | 86.7% 220.1
3718 | 4.60 | 41 | 10 | 2.94 | 82.0 | 98.4 | 100.0% 729.6
2812 | 1.53 | 0 | 39 | 2.94 | 82.0 | 98.4 | 82.2% 94.3
2437 | 0.00 | 0 | 38 | 2.94 | 82.0 | 98.4 | 100% 81.7
2687 | 7.42 | 1 | 27 | 2.94 | 82.0 98.4 | 124.2% 452.8
2656 | 7.67 | 0 | 24 | 2.94 | 82.0 98.4 | 122.2% 471.7

Still kinda new to the loggers but i think TIMA meaing timming

 

[92Talon251]

I got it fixed I used Mopar Combustion cleaner 1 can threw the PCV Valve hose and let it sit for 10 mins then drove to got 0 counts of knock the whole 20 min drive.

 

[kpt4321]

Yeah, it's phantom knock.

 

[MyBlack94GST]

Kyle -
If Mopar Combustion Chamber Cleaner fixed it... that would mean there was carbon buildup in the cylinders. You state that it was phantom knock. Does this mean the carbon was already loose and bouncing around, thus triggering the sensor? Or does it mean that it created hotspots, thus triggering preignition... in which case it would be REAL knock solved by MCCC? Just wondering, since I have had this problem on and off.

 

[kpt4321]

Good question!

It is possible that there was enough carbon on the pistons to contact the valves, causing a knocking noise.

It is possible, I suppose, that the preignition caused by possible hotspots, of the detonation caused by the higher compression, was causing real knock.

However, true knock sums of 43 are fairly uncommon, unless your car is WAY off tune.

 

[92Talon251]

I have been driving about a week now still just the random 1 to 3 counts of knock mostly it stays at 0 With my current 02 readings I think I am running rich will this cause more carbon build up's if so how soon ?

I seems to be steady at 2.94 volts some times droping to 2.43 volts is this right??

 

[talonkev]

I had an almost constant knock count of 43 untill i got my new revised lifters, now the knock is alot less common. I would highly recomend replacing your lifters as soon as possible to get rid of the phantom knock.

 

[kpt4321]

O2 voltage should be between 0 and 1.0 volts.

 

[Defiant]

It is possible that there was enough carbon on the pistons to contact the valves, causing a knocking noise.

I very strongly disagree with the possibility of that.

 

[92Talon251]

O2 voltage should be between 0 and 1.0 volts.

What is causing mine to run 2.94 volts is it a bad 02 sensor I just got it 2 months ago?