I have a misfire / spark plug issue - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Spec · 04-19-2018, 04:49 PM

Seems like a busted rocker or spring....

nyrfan · 04-19-2018, 04:51 PM

Quote:

Originally Posted by Spec

Seems like a busted rocker or spring....

Really? Ugh! How do I know for sure?

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Spec · 04-19-2018, 05:18 PM

Quote:

Originally Posted by nyrfan

Really? Ugh! How do I know for sure?

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A CEL code will just show a misfire but could pinpoint what cylinder is having the issue.... mine was a P0300 for cylinder 3 if I recall correctly. You'll need to take it to a shop or uncover the engine yourself to know for sure.

It's not so bad... dealer charged me under 600 to repair in 48hrs when it happened to me. Car will run like new again after the fix if this is your issue.

nyrfan · 04-19-2018, 08:06 PM

Quote:

Originally Posted by Spec

A CEL code will just show a misfire but could pinpoint what cylinder is having the issue.... mine was a P0300 for cylinder 3 if I recall correctly. You'll need to take it to a shop or uncover the engine yourself to know for sure.

It's not so bad... dealer charged me under 600 to repair in 48hrs when it happened to me. Car will run like new again after the fix if this is your issue.

It’s kind of weird though why would both sides have oil on the plugs.

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Spec · 04-19-2018, 10:30 PM

I swapped my plugs out a couple of weeks ago for the second time with a good set of wires too... I remember a little something on all 8 of the plugs, though even wear which was a good sign after about 50-55k since the last swap... they looked a bit oily too.

Some of that stuff on your plugs is normal. You'll probably see a bit more or less due to unique driving conditions and engine wear etc and/or how long you've had them on the engine.

I don't know man, but I think that if I couldn't figure it out after some troubleshooting and frustration - its time to take it to a shop/service dept. to have it checked out. You could be doing some damage driving it and turning it off and on trying to figure out what's up, especially if it is a busted rocker or spring.

Just hope you don't have a spun bearing or something like that.......

camguynj · 04-20-2018, 09:52 AM

Quote:

Originally Posted by nyrfan

Anyone know the torque specs for the spark plugs?

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11 ft lbs

MrChrisLS3 · 04-20-2018, 11:44 AM

That seems like a pretty thick coating of oil on that plug. The thing is, if you had that much oil going into the CC chamber you would have some blue smoke I would think, and the electrode end of the plug would at least have some carbon on it.

I assuming that the other 6 plugs all looked normal?

You mentioned headers, were the plugs removed during the install? It is not uncommon for plugs to get damaged during install from what I understand. This would explain intermittent misfire, but not he oil, unless the plugs thread with oil instead of anti-seize. But then I would think they all would look like that.

christianchevell · 04-21-2018, 08:44 AM

Clean your MAF sensor IMO and air filter first......make sure its all installed tight.

xstuntman · 04-21-2018, 12:02 PM

I'd swap those two plugs around with two others and see if it continues on those same cylinders. Just remember what got swapped where.

An ohms test on those two wires would be a good move too.

Avenging Orange · 04-21-2018, 07:55 PM

Ok, I'll ask the obvious.....how long ago were headers installed? When did this problem present itself? What else has been done to the car?

nyrfan · 04-22-2018, 03:32 PM

All, thanks for all the advice. I wound up changing the plugs and holy shit it’s like a new freaking car, I can believe the power I was missing. As a note, the stock plugs were gapped to nearly 58, crazy!! According to my research the gap is supposed to be 44, so the new ones are gapped to 44.

I believe the plugs were just fouled because I’ve only put about 750 miles on the car in about 2 years. So I drained the gas as well and put a fresh tank in with a can of sea-foam and stabilizer.

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camguynj · 04-22-2018, 07:50 PM

Quote:

Originally Posted by nyrfan

All, thanks for all the advice. I wound up changing the plugs and holy shit it’s like a new freaking car, I can believe the power I was missing. As a note, the stock plugs were gapped to nearly 58, crazy!! According to my research the gap is supposed to be 44, so the new ones are gapped to 44.

I believe the plugs were just fouled because I’ve only put about 750 miles on the car in about 2 years. So I drained the gas as well and put a fresh tank in with a can of sea-foam and stabilizer.

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Did you check the new plugs from the cylinders that had oil on the threads of the old plugs ?

KerseySS · 04-22-2018, 07:56 PM

One of my plug wires came loose just cruising home one day and started miss firing. Seems like you fixed your issue, I just thought I would share.

MrChrisLS3 · 04-23-2018, 12:38 AM

Quote:

Originally Posted by camguynj

Did you check the new plugs from the cylinders that had oil on the threads of the old plugs ?

Yeah, keep an eye on those. Your pic just seemed like a lot of oil. Not trying to be a kill joy here, but changing the plugs may have temporarily fixed the symptom. I do hope you're correct however, and she's back to normal. I don't really know all the effects of lack of use, I'll put 700 miles on my car in two weeks.

04-21-2018, 08:44 AM	#22
christianchevell old school chevy rodder Drives: 2013 2SS/RS Manual,DM exhaust,CRT Join Date: Jul 2012 Location: Oregon Posts: 5,588 View My Garage	Clean your MAF sensor IMO and air filter first......make sure its all installed tight. __________________ 2021 Wild Cherry ZL1 A10, Sunroof, Data, Carbon, Nav, RotoFab Dry CAI, Elite x2, Borla ATK, Driveshaft shop

04-21-2018, 12:02 PM	#23
xstuntman Drives: 2012 Victory Red LFX Join Date: Dec 2012 Location: west central Texas Posts: 1,310	I'd swap those two plugs around with two others and see if it continues on those same cylinders. Just remember what got swapped where. An ohms test on those two wires would be a good move too. __________________ 2018 SS wheels, red Heritage grille, actual driving lights, ZL1 strut tower brace, GM Performance billet aluminum fuel door, front grille Bowtie delete, painted red rotors and calipers, 1/4 window American Flags, splash guards, AEM dry panel air filter.

04-21-2018, 07:55 PM	#24
Avenging Orange Drives: 2010 Inferno Orange 2SS/RS Join Date: Apr 2010 Location: Clermont, IN Posts: 3,297	Ok, I'll ask the obvious.....how long ago were headers installed? When did this problem present itself? What else has been done to the car? __________________ 2010 Inferno Orange 2SS/RS M6 Black Leather, Sun Roof, OBX Headers, Borla touring axle back, Cold Air Inductions CAI , non synthetic fluids, BMR total bushing upgrade/1" lowering springs, DSE 32mm rear sway bar. GM fe4 shocks/struts/LCA's, AAM 3.91 diff, Vertini RFS1.8 20x9 +30. Conti ExtremeContact Sport 275/35/20. sjm autoprod ABL dash kit. Mike Norris tuned 413/419. Avenging Orange: 43 years of not buying into the Hype........and damn proud of it!! https://youtu.be/9JD9it6SmB8 https://youtu.be/xmelTlEzI34 KICKING CANCERS ASS SINCE 2015!!

04-22-2018, 03:32 PM	#25
nyrfan Let's go Rangers! Drives: 13' AGM 2SS/RS L99 Join Date: Jun 2011 Location: Orlando, FL Posts: 10,742 View My Garage	All, thanks for all the advice. I wound up changing the plugs and holy shit it’s like a new freaking car, I can believe the power I was missing. As a note, the stock plugs were gapped to nearly 58, crazy!! According to my research the gap is supposed to be 44, so the new ones are gapped to 44. I believe the plugs were just fouled because I’ve only put about 750 miles on the car in about 2 years. So I drained the gas as well and put a fresh tank in with a can of sea-foam and stabilizer. Sent from my iPhone using Tapatalk __________________ Soprano 4/1/00-6/14/11, Gone but NEVER forgotten! FSP tuned: 377/389

04-22-2018, 07:56 PM	#27
KerseySS Joey Drives: 2011 Camaro 2SS/RS L99 Cyber Grey Join Date: Feb 2017 Location: GA Posts: 113	One of my plug wires came loose just cruising home one day and started miss firing. Seems like you fixed your issue, I just thought I would share. __________________ 2011 Cyber Grey L99 SS/RS- 3.91 Gear MRR 228 Wheels-Hurst shifter/base plate LT Headers no CATS-Magnaflow 16582 Axle Back RoboFab intake-Dyno Steve tune ZL1 Rocker Panels-SLP Splitter Lowered on Phastek springs Pray Performance ported TB

04-19-2018, 04:49 PM	#15
Spec Account Suspended Drives: 2010 Camaro 1SS LS3 Join Date: Jan 2015 Location: Riverside, CA Posts: 4,018	Seems like a busted rocker or spring....

04-19-2018, 10:30 PM	#19
Spec Account Suspended Drives: 2010 Camaro 1SS LS3 Join Date: Jan 2015 Location: Riverside, CA Posts: 4,018	I swapped my plugs out a couple of weeks ago for the second time with a good set of wires too... I remember a little something on all 8 of the plugs, though even wear which was a good sign after about 50-55k since the last swap... they looked a bit oily too. Some of that stuff on your plugs is normal. You'll probably see a bit more or less due to unique driving conditions and engine wear etc and/or how long you've had them on the engine. I don't know man, but I think that if I couldn't figure it out after some troubleshooting and frustration - its time to take it to a shop/service dept. to have it checked out. You could be doing some damage driving it and turning it off and on trying to figure out what's up, especially if it is a busted rocker or spring. Just hope you don't have a spun bearing or something like that.......

04-20-2018, 11:44 AM	#21
MrChrisLS3 Drives: 2018 1SS M6 Join Date: Nov 2014 Location: Houston Posts: 2,617	That seems like a pretty thick coating of oil on that plug. The thing is, if you had that much oil going into the CC chamber you would have some blue smoke I would think, and the electrode end of the plug would at least have some carbon on it. I assuming that the other 6 plugs all looked normal? You mentioned headers, were the plugs removed during the install? It is not uncommon for plugs to get damaged during install from what I understand. This would explain intermittent misfire, but not he oil, unless the plugs thread with oil instead of anti-seize. But then I would think they all would look like that.