DevilsG37s

So yesterday I had some free time, so I went and removed all the plugs and cleand them thoroughly with chemicals along with the throttle bodies. And then fired the plugs up with a torch. They're now 80% near new. I had the chance to take some before pics but not after cleaning because it was very late and the phone died on me

Result: I say 85% improvement. Rarely to notice any misfiring or shaking. I wanted to replace all the plugs with new ones but didn't have them in hand at the time and I had to do something in my off days. I will be changing them soon and also inspect the coils.

Pics:











Tell me what you think for only three months plugs!

Fuel trim screenshot:



Here is a test report after all that:

Test report:
------------------
MID:$01 TID:$83
- O2 Bank 1 Sensor 1
Max: 65.535V Min: 0.4V
Test result value: 2.19V
PASS
----
MID:$01 TID:$84
- O2 Bank 1 Sensor 1
Max: 4.399V Min: 0V
Test result value: 2.19V
PASS
----
MID:$01 TID:$85
- O2 Bank 1 Sensor 1
Max: 2.149V Min: 0V
Test result value: 2.07V
PASS
----
MID:$01 TID:$86
- O2 Bank 1 Sensor 1
Max: 65.535V Min: 2.25V
Test result value: 4.11V
PASS
----
MID:$01 TID:$87
- O2 Bank 1 Sensor 1
Max: 65.535 Min: 0.3
Test result value: 0.42
PASS
----
MID:$01 TID:$88
- O2 Bank 1 Sensor 1
Max: 65.535 Min: 0.3
Test result value: 0.456
PASS
----
MID:$01 TID:$89
- O2 Bank 1 Sensor 1
Max: 0.449 Min: -32.768
Test result value: -0.138
PASS
----
MID:$02 TID:$07
Minimum sensor Voltage for test cycle(calculated) - O2 Bank 1 Sensor 2
Max: 0.17V Min: 0V
Test result value: 0.17V
PASS
----
MID:$02 TID:$08
Maximum sensor Voltage for test cycle(calculated) - O2 Bank 1 Sensor 2
Max: 2.55V Min: 0.7V
Test result value: 0.7V
PASS
----
MID:$02 TID:$80
- O2 Bank 1 Sensor 2
Max: 1.19V Min: 0V
Test result value: 0.69V
PASS
----
MID:$02 TID:$81
- O2 Bank 1 Sensor 2
Max: 2.55V Min: 0.48V
Test result value: 0.5V
PASS
----
MID:$02 TID:$82
- O2 Bank 1 Sensor 2
Max: 3.9S Min: 0S
Test result value: 3.1S
PASS
----
MID:$05 TID:$83
- O2 Bank 2 Sensor 1
Max: 65.535V Min: 0.4V
Test result value: 2.12V
PASS
----
MID:$05 TID:$84
- O2 Bank 2 Sensor 1
Max: 4.399V Min: 0V
Test result value: 2.12V
PASS
----
MID:$05 TID:$85
- O2 Bank 2 Sensor 1
Max: 2.149V Min: 0V
Test result value: 2.145V
PASS
----
MID:$05 TID:$86
- O2 Bank 2 Sensor 1
Max: 65.535V Min: 2.25V
Test result value: 4.115V
PASS
----
MID:$05 TID:$87
- O2 Bank 2 Sensor 1
Max: 65.535 Min: 0.3
Test result value: 0.548
PASS
----
MID:$05 TID:$88
- O2 Bank 2 Sensor 1
Max: 65.535 Min: 0.3
Test result value: 0.442
PASS
----
MID:$05 TID:$89
- O2 Bank 2 Sensor 1
Max: 0.449 Min: -32.768
Test result value: -0.062
PASS
----
MID:$06 TID:$07
Minimum sensor Voltage for test cycle(calculated) - O2 Bank 2 Sensor 2
Max: 0.17V Min: 0V
Test result value: 0.17V
PASS
----
MID:$06 TID:$08
Maximum sensor Voltage for test cycle(calculated) - O2 Bank 2 Sensor 2
Max: 2.55V Min: 0.7V
Test result value: 0.7V
PASS
----
MID:$06 TID:$80
- O2 Bank 2 Sensor 2
Max: 1.19V Min: 0V
Test result value: 0.62V
PASS
----
MID:$06 TID:$81
- O2 Bank 2 Sensor 2
Max: 2.55V Min: 0.48V
Test result value: 0.48V
PASS
----
MID:$06 TID:$82
- O2 Bank 2 Sensor 2
Max: 3.9S Min: 0S
Test result value: 0.4S
PASS
----
MID:$21 TID:$80
- Catalyst Monitor Bank 1
Max: 255 Min: 10
Test result value: 6
FAIL
----
MID:$21 TID:$82
- Catalyst Monitor Bank 1
Test incomplete or dependant test failed
--
MID:$22 TID:$80
- Catalyst Monitor Bank 2
Max: 255 Min: 10
Test result value: 6
FAIL
----
MID:$22 TID:$82
- Catalyst Monitor Bank 2
Test incomplete or dependant test failed
--
MID:$35 TID:$80
-
Max: 13° Min: -13°
Test result value: 2°
PASS
----
MID:$35 TID:$82
-
Max: 13° Min: -13°
Test result value: -0.5°
PASS
----
MID:$35 TID:$84
-
Max: 499ms Min: 0ms
Test result value: 122ms
PASS
----
MID:$35 TID:$85
-
Max: 10,779ms Min: 0ms
Test result value: 10ms
PASS
----
MID:$36 TID:$80
-
Max: 13° Min: -13°
Test result value: 4.5°
PASS
----
MID:$36 TID:$82
-
Max: 13° Min: -13°
Test result value: 0.5°
PASS
----
MID:$36 TID:$84
-
Max: 499ms Min: 0ms
Test result value: 119ms
PASS
----
MID:$36 TID:$85
-
Max: 2,379ms Min: 0ms
Test result value: 20ms
PASS
----
MID:$3c TID:$81
- EVAP Monitor (0.040")
Max: 32.767kPa Min: 0.43kPa
Test result value: 32.767kPa
PASS
----
MID:$3c TID:$82
- EVAP Monitor (0.040")
Max: 32.767kPa Min: 0.1kPa
Test result value: 32.767kPa
PASS
----
MID:$3d TID:$83
- EVAP Monitor (0.020")
Max: 655.34998V Min: 0.02V
Test result value: 0.06V
PASS
----
MID:$41 TID:$81
- O2 Heater Monitor Bank 1 - Sensor 1
Max: 4.779V Min: 0.39V
Test result value: 1.11V
PASS
----
MID:$42 TID:$80
- O2 Heater Monitor Bank 1 - Sensor 2
Max: 4.71V Min: 0.24V
Test result value: 1.58V
PASS
----
MID:$45 TID:$81
- O2 Heater Monitor Bank 2 - Sensor 1
Max: 4.779V Min: 0.39V
Test result value: 1.085V
PASS
----
MID:$46 TID:$80
- O2 Heater Monitor Bank 2 - Sensor 2
Max: 4.71V Min: 0.24V
Test result value: 1.5V
PASS
----
MID:$81 TID:$80
- Fuel System Monitor Bank 1
Max: 130.98999% Min: 77.00999%
Test result value: 93.68999%
PASS
----
MID:$81 TID:$81
- Fuel System Monitor Bank 1
Test incomplete or dependant test failed
--
MID:$82 TID:$80
- Fuel System Monitor Bank 2
Max: 130.98999% Min: 77.00999%
Test result value: 94.71%
PASS
----
MID:$82 TID:$81
- Fuel System Monitor Bank 2
Test incomplete or dependant test failed
--
MID:$a2 TID:$0b
EWMA Misfire counts (average) for last 10 drive cycles - Misfire Cylinder 1 Data
Max: 65,535Count Min: 0Count
Test result value: 1Count
PASS
----
MID:$a2 TID:$0c
Misfire counts for last/current driving cycles(calculated) - Misfire Cylinder 1 Data
Max: 65,535Count Min: 0Count
Test result value: 0Count
PASS
----
MID:$a3 TID:$0b
EWMA Misfire counts (average) for last 10 drive cycles - Misfire Cylinder 2 Data
Max: 65,535Count Min: 0Count
Test result value: 3Count
PASS
----
MID:$a3 TID:$0c
Misfire counts for last/current driving cycles(calculated) - Misfire Cylinder 2 Data
Max: 65,535Count Min: 0Count
Test result value: 1Count
PASS
----
MID:$a4 TID:$0b
EWMA Misfire counts (average) for last 10 drive cycles - Misfire Cylinder 3 Data
Max: 65,535Count Min: 0Count
Test result value: 0Count
PASS
----
MID:$a4 TID:$0c
Misfire counts for last/current driving cycles(calculated) - Misfire Cylinder 3 Data
Max: 65,535Count Min: 0Count
Test result value: 0Count
PASS
----
MID:$a5 TID:$0b
EWMA Misfire counts (average) for last 10 drive cycles - Misfire Cylinder 4 Data
Max: 65,535Count Min: 0Count
Test result value: 1Count
PASS
----
MID:$a5 TID:$0c
Misfire counts for last/current driving cycles(calculated) - Misfire Cylinder 4 Data
Max: 65,535Count Min: 0Count
Test result value: 0Count
PASS
----
MID:$a6 TID:$0b
EWMA Misfire counts (average) for last 10 drive cycles - Misfire Cylinder 5 Data
Max: 65,535Count Min: 0Count
Test result value: 2Count
PASS
----
MID:$a6 TID:$0c
Misfire counts for last/current driving cycles(calculated) - Misfire Cylinder 5 Data
Max: 65,535Count Min: 0Count
Test result value: 0Count
PASS
----
MID:$a7 TID:$0b
EWMA Misfire counts (average) for last 10 drive cycles - Misfire Cylinder 6 Data
Max: 65,535Count Min: 0Count
Test result value: 1Count
PASS
----
MID:$a7 TID:$0c
Misfire counts for last/current driving cycles(calculated) - Misfire Cylinder 6 Data
Max: 65,535Count Min: 0Count
Test result value: 0Count
PASS
----

End of report.

Rr1982

iTrader: (1)

With AC on ignition timing advances to keep engine torque enough to compensate for parasitic loss. Anyways, leaky cam cover, oil on coils or plug threads?

DevilsG37s

Nope, there is no leak on cover or any other part on the engine bay. Couple of times the engine oil cooler sandwitch plate leaked but I tightened it up and no leaking since.

Also no oil on the plug threads and coils.

Rr1982

iTrader: (1)

Check the cam/crank sensors,bad coil? Sorry I just read the initial post I'm at work so didn't have time to read all of them.

DevilsG37s

I'm suspecting a bad coil or two. But for the crank sensor, isn't a bad sensor would through a CEL code?

Rr1982

iTrader: (1)

Ok just skimmed through your scan results.Bad O2? Running rich when that happens.plugs look a bit coated . when AC on timing burns more fuel si maybe why it runs smoother.

Rr1982

iTrader: (1)

Does is smooth out with AC off and high beams on?

DevilsG37s

Bad O2 due to the test pipes. Everytime I reset the ECU, it takes sometime for the CEL to come back again. Weird that it took two days with over 500 mi driving now without throughing the codes. I think the Upstream and downstream O2 sensors are also coated like the plugs or even worse for them to not detect the test pipes quickly.

If you read post #21, I mentioned that I used STP cleaner. Maybe using that cleaner through the brake booster was a bad idea anyway and got the plugs along with the O2 sensors to go bad and making them get bad reading of the burnt mixture hence the off fueling and misfiring.

Just guessing here.



I'm not sure. I will test that tomorrow morning and report back.

Rr1982

iTrader: (1)

Okay once again forgive me I haven't read the whole thread do you have live bands are you running race gas

Rr1982

iTrader: (1)

Wide band

DevilsG37s

It's ok for not reading the whole thread. Your help is appreciated.

What do you mean by live band?
No haven't run a race gas before. Only some homemade toluene mix that I did like 7 months ago and haven't had any problem when I did it. It was only for two gals just for the sake of testing the timing adv.

DevilsG37s

Yes. I can log data through my EcuTek kit and post it when I have some free time. What parameters are you looking for?

Rr1982

iTrader: (1)

I don't know I'm driving a semi truck so I can't read it now but I will later sorry

Rr1982

iTrader: (1)

Okay I read your scan reports I didn't see anything about Cylinder 6 misfire maybe I missed it I do however see that it looks like your O2 sensors might be dirty or failing on both Banks. Why are you getting all this dirt in your intake tubes and why did you shoot at STP into a vacuum line

Rr1982

iTrader: (1)

Are you getting a check engine light