Keep getting misfires - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

snarky · 05-11-2018, 07:10 PM

plug wires is my uneducated guess

2010_camaro · 05-12-2018, 06:28 AM

Quote:

Originally Posted by blake-b

They're probably too cold for day to day driving. Try some BR7EFs. My car does fine with them cruising around or having the snot run out of it.

At the power level of my car I'm worried about running 7s.
They say every 100 extra hp drop a heat range. Car made 700whp on 9lbs and 93oct. Now that I'm on 22lbs and e85 idk what plug I should have. Lol my tuner said 8s is what he thought was a good pick.

blake-b · 05-12-2018, 10:49 AM

I made 1006whp at 13.6 #. I make over 1200 on high boost 27#. I checked plugs last night and mine look good.

I also run e85.

All im saying it is worth trying for less than $30 a set.

2010_camaro · 05-12-2018, 11:00 AM

Quote:

Originally Posted by blake-b

I made 1006whp at 13.6 #. I make over 1200 on high boost 27#. I checked plugs last night and mine look good.

I also run e85.

All im saying it is worth trying for less than $30 a set.

How much timing you running ? Also what's your plug gap?

blake-b · 05-12-2018, 08:31 PM

22* and .024
I was getting spark blowout on high boost and I installed a JMS sparkmax I had laying around. I don't know if it cured the spark blowout because I am afraid to drive the car on high boost on the street but since I already had it, it did no harm installing it.

Read this:
https://sites.google.com/site/sloppy...ls/spark-plugs

se7en · 05-12-2018, 10:12 PM

I think its certainly your plugs being too cold. Put in some 7's and be done with it.

2010_camaro · 05-13-2018, 03:24 AM

Quote:

Originally Posted by blake-b

22* and .024
I was getting spark blowout on high boost and I installed a JMS sparkmax I had laying around. I don't know if it cured the spark blowout because I am afraid to drive the car on high boost on the street but since I already had it, it did no harm installing it.

Read this:
https://sites.google.com/site/sloppy...ls/spark-plugs

Damn 22* I'm only on 18* I need to add some lol

2010_camaro · 05-21-2018, 09:26 AM

Well I switched to the NGK BR7EF plugs gapped to .025 and still getting misfires under high boost. Plugs look fine. Wires are new. Could my two step be causing the issue? Its the LNC 003 2 step

blake-b · 05-21-2018, 01:45 PM

I don't know anything about the LNC but I suggest:
-checking the coils carefully to make sure there are no cracks
-drop the plug gap down incrementally and see if you can get the misfire to go away
-Are your valvesprings good?

se7en · 05-23-2018, 09:48 PM

Quote:

Originally Posted by 2010_camaro

Well I switched to the NGK BR7EF plugs gapped to .025 and still getting misfires under high boost. Plugs look fine. Wires are new. Could my two step be causing the issue? Its the LNC 003 2 step

Yes disconnect it and check to see if your issue goes away. That box has been known to cause issues here and there.

JANNETTYRACING · 05-24-2018, 07:32 AM

Quote:

Originally Posted by JANNETTYRACING

Would not surprise me if you had to drop down to 0.018 gap.

A JMS ignition voltage booster can make it so you can run 0.025 gap without spark blow out.

Ted.

Maybe you missed this.

2010_camaro · 05-30-2018, 07:32 PM

Well I closed the gap to .018 on my #7 plugs and it seemed to have fixed the issue. Time will tell tho. These are fresh plugs so hopefully after I put some miles on these they still hold up.

se7en · 05-30-2018, 09:06 PM

Quote:

Originally Posted by 2010_camaro

Well I closed the gap to .018 on my #7 plugs and it seemed to have fixed the issue. Time will tell tho. These are fresh plugs so hopefully after I put some miles on these they still hold up.

Thanks for the update! Please keep it coming as you put miles on the car. I sure hope it’s fixed.

05-11-2018, 07:10 PM	#15
snarky ultracrepidarianism Drives: '14 1SS/RS/1LE/NPP '18 Accord Sport Join Date: Mar 2014 Location: where folks drive like shit Posts: 1,297	plug wires is my uneducated guess __________________

05-12-2018, 08:31 PM	#19
blake-b Drives: 2009 ZR1 Join Date: May 2010 Location: KCMO Posts: 3,205	22* and .024 I was getting spark blowout on high boost and I installed a JMS sparkmax I had laying around. I don't know if it cured the spark blowout because I am afraid to drive the car on high boost on the street but since I already had it, it did no harm installing it. Read this: https://sites.google.com/site/sloppy...ls/spark-plugs Last edited by blake-b; 05-13-2018 at 12:44 AM.

05-12-2018, 10:12 PM	#20
se7en Drives: 10 Procharged SS Join Date: Oct 2009 Location: The creek at the end of the dead end road Posts: 1,857	I think its certainly your plugs being too cold. Put in some 7's and be done with it. __________________ 10 Camaro: Built 376, LSA Heads, BTR valve train and Stage III Camshaft. F1A 12 Rib-3.75 pulley (17psi), Squash Dual Fuel System with Return (Dual Walbro 450LPH on a Hobbs Switch), Aeromotive regulator, Holley Fuel Rails, ID1300's. RMVB 4L80, 4K Stall, and Trans-brake. 9" IRS, 3.50 gears with a full spool

05-21-2018, 09:26 AM	#22
2010_camaro Drives: 2014 Camaro SS Join Date: May 2011 Location: Florence, KY Posts: 2,238 View My Garage	Well I switched to the NGK BR7EF plugs gapped to .025 and still getting misfires under high boost. Plugs look fine. Wires are new. Could my two step be causing the issue? Its the LNC 003 2 step __________________ MODS 6.0 forged iron block, TH400, B&M shifter, DSS axles & driveshaft, Viking / BMR suspension, Full custom fuel system with cell, Twin 76mm teriyaki tornados on 24lbs. https://www.instagram.com/whoopa_ss/

05-30-2018, 07:32 PM	#26
2010_camaro Drives: 2014 Camaro SS Join Date: May 2011 Location: Florence, KY Posts: 2,238 View My Garage	Well I closed the gap to .018 on my #7 plugs and it seemed to have fixed the issue. Time will tell tho. These are fresh plugs so hopefully after I put some miles on these they still hold up. __________________ MODS 6.0 forged iron block, TH400, B&M shifter, DSS axles & driveshaft, Viking / BMR suspension, Full custom fuel system with cell, Twin 76mm teriyaki tornados on 24lbs. https://www.instagram.com/whoopa_ss/

05-12-2018, 10:49 AM	#17
blake-b Drives: 2009 ZR1 Join Date: May 2010 Location: KCMO Posts: 3,205	I made 1006whp at 13.6 #. I make over 1200 on high boost 27#. I checked plugs last night and mine look good. I also run e85. All im saying it is worth trying for less than $30 a set.

05-21-2018, 01:45 PM	#23
blake-b Drives: 2009 ZR1 Join Date: May 2010 Location: KCMO Posts: 3,205	I don't know anything about the LNC but I suggest: -checking the coils carefully to make sure there are no cracks -drop the plug gap down incrementally and see if you can get the misfire to go away -Are your valvesprings good?