Loss of power at 6K, Spark Plugs melted - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

JamesZL1 · 01-10-2015, 10:04 PM

When I was out testing the MT Street Comps the 1st day I had them, I was having power issues with my car, It kept cutting out when I would get on it hard (up top). I took it to my shop and they threw it on the Dyno to check out my car. They noticed that it would stop making power at 6K and the fuel mixture was all out of wack. Initially they thought I broke a valve spring (PRC double springs from Texas Speed). After inspecting them, that was not the case. They ended up finding the ends melted off of several of the spark plugs. I went ahead and had the springs replaced with BTR springs since they had the covers off just so I would have piece of mind, They installed a colder plug. New tune on Monday. Not sure what actually happened to the plugs at this moment, going to check the fuel pressure while its on the Dyno to see if that is what might have caused it.

https://www.facebook.com/photo.php?f...0&l=4e573d8d8d

Josh.Duncan · 01-10-2015, 10:34 PM

Quote:

Originally Posted by JamesZL1

When I was out testing the MT Street Comps the 1st day I had them, I was having power issues with my car, It kept cutting out when I would get on it hard (up top). I took it to my shop and they threw it on the Dyno to check out my car. They noticed that it would stop making power at 6K and the fuel mixture was all out of wack. Initially they thought I broke a valve spring (PRC double springs from Texas Speed). After inspecting them, that was not the case. They ended up finding the ends melted off of several of the spark plugs. I went ahead and had the springs replaced with BTR springs since they had the covers off just so I would have piece of mind, They installed a colder plug. New tune on Monday. Not sure what actually happened to the plugs at this moment, going to check the fuel pressure while its on the Dyno to see if that is what might have caused it.

https://www.facebook.com/photo.php?f...0&l=4e573d8d8d

I saw you talking about this in Oklahoma Camaros! Glad everything got fixed!

2014 1LT/RS
Mods: K&N Cold Air Intake, BMR Strut Tower Brace, MRT V1.0 Axle-Back Exhaust, LG Motorsports ZR28 Black Wheels

JamesZL1 · 01-10-2015, 11:37 PM

It's still at the shop..they were having trouble getting the last spring retainers on. The Tuner really didn't want me driving it because he said it was pig rich, so I left it there till he can tune it Monday.

DrkPhx · 01-11-2015, 10:50 AM

Not good. I'm surprised (and disappointed) they left the stock plugs in such an aggressive set up. Even with a cam, your boost must be 15 psi. You absolutely must go to a colder plug in that set up. My guess is you loss some fuel pressure, ran lean and detonated like crazy. What was the commanded AFR and timing at WOT? Those plugs are destroyed. I would change the oil and do a leak down test to confirm there is no engine damage. My 02.

CHMSC · 01-11-2015, 10:54 AM

Quote:

Originally Posted by DrkPhx

Not good. I'm surprised (and disappointed) they left the stock plugs in such an aggressive set up. Even with a cam, your boost must be 15 psi. You absolutely must go to a colder plug in that set up. My guess is you loss some fuel pressure, ran lean and detonated like crazy. What was the commanded AFR and timing at WOT? Those plugs are destroyed. I would change the oil and do a leak down test to confirm there is no engine damage. My 02.

I would agree with these recommendations.

JamesZL1 · 01-11-2015, 04:19 PM

AFR was 11 at WOT and I believe 18 degrees of timing.. Yes, I am at 15 lbs. of boost. They are going with an NGK 7 plug this time...I just recently put the 2.5 upper on and I have not driven the car hard at all because of traction issues. I think I only hit WOT twice the day before I took it in to check the tune on it..It started cutting out at 6K RPMs. I was testing the traction of some new tires...only had it up there for a few seconds each time.

Stephen12ZL1 · 01-11-2015, 04:33 PM

melted spark plugs is a serious mess up with the overall tune. There is no way that should happen if the fueling was close to correct. I have run my car at the road course to the point of the car going into reduced power mode and the spark plugs still looked perfect. Even with the stock heat range that should not happen. Of course a colder plug would be more ideal.

vatechguy3 · 01-12-2015, 06:40 AM

Are the 850 injectors enough with your setup?

Maybe need a boost-a-pump?

Tony

JamesZL1 · 01-12-2015, 07:11 PM

Well they put it back on the Dyno tonight with my current setup and seen that there was a 20lb loss in fuel pressure at WOT. I already ordered a Boost a Pump from Lingenfelter and will be here on Thursday. They think this will solve my current issues, but it don't look like I will be able to do the E85 Conversion (Sensor) without upgrading to 1000CC injectors and a secondary fuel system, Won't know for sure till they get the BAP installed and then look at all the data. Injectors are at about 80% right now...

CAM....ZL1 · 01-12-2015, 07:21 PM

Quote:

Originally Posted by JamesZL1

Well they put it back on the Dyno tonight with my current setup and seen that there was a 20lb loss in fuel pressure at WOT. I already ordered a Boost a Pump from Lingenfelter and will be here on Thursday. They think this will solve my current issues, but it don't look like I will be able to do the E85 Conversion (Sensor) without upgrading to 1000CC injectors and a secondary fuel system, Won't know for sure till they get the BAP installed and then look at all the data. Injectors are at about 80% right now...

Wow I can't believe they didn't catch the low pressure at wot or recommend a bap initially. JRE would not sell me the 9.55 pulley without adding a bap and I had stock upper.

BLACK10 · 01-12-2015, 09:25 PM

I dont think a BAP will be enough. We always go with a twin pump if the mods on the LSA or more than just an upper pulley. These LSA's are very sensitive to detonation. Stock plugs and that power level with only injectors are a recipe for disaster!

Nick

ZL1-Camaro · 01-12-2015, 09:57 PM

I take it that the Mickey Thompson street tires will not hook.

JamesZL1 · 01-12-2015, 10:45 PM

wonder if it has anything to do with the Headers and X pipe I had put on. I lost a set of O2 sensors, and still have the uppers hooked up. Don't know if this is/was enough to show the actual AFR at WOT. I am still trying to figure out how my Dads Lingerfelter ZL1 is able to make 15 lbs. of boost (like I am doing) and it does not show that they upgraded his fuel system with their 700HP package.

ielengsabi · 01-13-2015, 02:21 AM

The Tuner really didn't want me driving it because he said it was pig rich

01-10-2015, 10:04 PM	#1
JamesZL1 Drives: 2013 ZL1 A6 Camaro, 2015 C7 A6 Z51 Join Date: Apr 2014 Location: Oklahoma Posts: 396	Loss of power at 6K, Spark Plugs melted When I was out testing the MT Street Comps the 1st day I had them, I was having power issues with my car, It kept cutting out when I would get on it hard (up top). I took it to my shop and they threw it on the Dyno to check out my car. They noticed that it would stop making power at 6K and the fuel mixture was all out of wack. Initially they thought I broke a valve spring (PRC double springs from Texas Speed). After inspecting them, that was not the case. They ended up finding the ends melted off of several of the spark plugs. I went ahead and had the springs replaced with BTR springs since they had the covers off just so I would have piece of mind, They installed a colder plug. New tune on Monday. Not sure what actually happened to the plugs at this moment, going to check the fuel pressure while its on the Dyno to see if that is what might have caused it. https://www.facebook.com/photo.php?f...0&l=4e573d8d8d __________________ Roto-Fab CAI, Texas Speed Headers, Texas Speed X-Pipe, Texas Speed LS3-B Blower Cam, Metco 9.10" Crank Pulley, Metco 2.5 Upper Pulley, ID 850 Injectors, LPE Ported Throttle Body, Alky Control Methanol kit, E2 Catch Can, 610HP / 608 Torque.

01-10-2015, 11:37 PM	#3
JamesZL1 Drives: 2013 ZL1 A6 Camaro, 2015 C7 A6 Z51 Join Date: Apr 2014 Location: Oklahoma Posts: 396	It's still at the shop..they were having trouble getting the last spring retainers on. The Tuner really didn't want me driving it because he said it was pig rich, so I left it there till he can tune it Monday. __________________ Roto-Fab CAI, Texas Speed Headers, Texas Speed X-Pipe, Texas Speed LS3-B Blower Cam, Metco 9.10" Crank Pulley, Metco 2.5 Upper Pulley, ID 850 Injectors, LPE Ported Throttle Body, Alky Control Methanol kit, E2 Catch Can, 610HP / 608 Torque.

01-11-2015, 04:19 PM	#6
JamesZL1 Drives: 2013 ZL1 A6 Camaro, 2015 C7 A6 Z51 Join Date: Apr 2014 Location: Oklahoma Posts: 396	AFR was 11 at WOT and I believe 18 degrees of timing.. Yes, I am at 15 lbs. of boost. They are going with an NGK 7 plug this time...I just recently put the 2.5 upper on and I have not driven the car hard at all because of traction issues. I think I only hit WOT twice the day before I took it in to check the tune on it..It started cutting out at 6K RPMs. I was testing the traction of some new tires...only had it up there for a few seconds each time. __________________ Roto-Fab CAI, Texas Speed Headers, Texas Speed X-Pipe, Texas Speed LS3-B Blower Cam, Metco 9.10" Crank Pulley, Metco 2.5 Upper Pulley, ID 850 Injectors, LPE Ported Throttle Body, Alky Control Methanol kit, E2 Catch Can, 610HP / 608 Torque.

01-11-2015, 04:33 PM	#7
Stephen12ZL1 Drives: '21 ZLE A10 Join Date: May 2012 Location: Mechanicsville, VA Posts: 6,808	melted spark plugs is a serious mess up with the overall tune. There is no way that should happen if the fueling was close to correct. I have run my car at the road course to the point of the car going into reduced power mode and the spark plugs still looked perfect. Even with the stock heat range that should not happen. Of course a colder plug would be more ideal. __________________ '21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60' '17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold)

01-12-2015, 06:40 AM	#8
vatechguy3 Drives: 2014 ZL1 M6 Join Date: Jul 2014 Location: Virginia Posts: 493	Are the 850 injectors enough with your setup? Maybe need a boost-a-pump? Tony __________________ 2014 ZL1 M6 Bone stock, for now! 2001 Z28 M6 !cags, !air, FTP 85mm Lid, Z06 85mm MAF, P&P TB !4x4, Strano Springs, Strano Sways, Koni 4/4s, Watts Link ARH LTs, ARH catted Y, SLP catback with Dual/Dual Muffler, SLP CME and Valance OE Wheels Machined Face C5 DDs, 18x10.5s, with 295/35-18s on all 4 corners! 352rwhp and 366rwtq

01-11-2015, 10:50 AM	#4
DrkPhx Drives: 2013 Triple Black ZL1 / 2006 TB SS Join Date: Feb 2011 Location: MN Posts: 2,250	Not good. I'm surprised (and disappointed) they left the stock plugs in such an aggressive set up. Even with a cam, your boost must be 15 psi. You absolutely must go to a colder plug in that set up. My guess is you loss some fuel pressure, ran lean and detonated like crazy. What was the commanded AFR and timing at WOT? Those plugs are destroyed. I would change the oil and do a leak down test to confirm there is no engine damage. My 02.

01-12-2015, 07:11 PM	#9
JamesZL1 Drives: 2013 ZL1 A6 Camaro, 2015 C7 A6 Z51 Join Date: Apr 2014 Location: Oklahoma Posts: 396	Well they put it back on the Dyno tonight with my current setup and seen that there was a 20lb loss in fuel pressure at WOT. I already ordered a Boost a Pump from Lingenfelter and will be here on Thursday. They think this will solve my current issues, but it don't look like I will be able to do the E85 Conversion (Sensor) without upgrading to 1000CC injectors and a secondary fuel system, Won't know for sure till they get the BAP installed and then look at all the data. Injectors are at about 80% right now... __________________ Roto-Fab CAI, Texas Speed Headers, Texas Speed X-Pipe, Texas Speed LS3-B Blower Cam, Metco 9.10" Crank Pulley, Metco 2.5 Upper Pulley, ID 850 Injectors, LPE Ported Throttle Body, Alky Control Methanol kit, E2 Catch Can, 610HP / 608 Torque.

01-12-2015, 09:25 PM	#11
BLACK10 Drives: 2010 CAMARO. 10.04@133mph, 1.4 60' Join Date: Jul 2009 Location: Lafayette, Louisiana Posts: 4,585	I dont think a BAP will be enough. We always go with a twin pump if the mods on the LSA or more than just an upper pulley. These LSA's are very sensitive to detonation. Stock plugs and that power level with only injectors are a recipe for disaster! Nick

01-12-2015, 09:57 PM	#12
ZL1-Camaro Drives: Black M6 2013 Join Date: Dec 2012 Location: Wa Posts: 119	I take it that the Mickey Thompson street tires will not hook.

01-12-2015, 10:45 PM	#13
JamesZL1 Drives: 2013 ZL1 A6 Camaro, 2015 C7 A6 Z51 Join Date: Apr 2014 Location: Oklahoma Posts: 396	wonder if it has anything to do with the Headers and X pipe I had put on. I lost a set of O2 sensors, and still have the uppers hooked up. Don't know if this is/was enough to show the actual AFR at WOT. I am still trying to figure out how my Dads Lingerfelter ZL1 is able to make 15 lbs. of boost (like I am doing) and it does not show that they upgraded his fuel system with their 700HP package. __________________ Roto-Fab CAI, Texas Speed Headers, Texas Speed X-Pipe, Texas Speed LS3-B Blower Cam, Metco 9.10" Crank Pulley, Metco 2.5 Upper Pulley, ID 850 Injectors, LPE Ported Throttle Body, Alky Control Methanol kit, E2 Catch Can, 610HP / 608 Torque.

01-13-2015, 02:21 AM	#14
ielengsabi Drives: audi Join Date: Jan 2015 Location: a4 Posts: 4	The Tuner really didn't want me driving it because he said it was pig rich