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08-18-2021, 06:37 AM
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#1 |
 Drives: 2012 Camaro Join Date: Aug 2021
Location: Dayton, Ohio
Posts: 5
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HELP NEEDED
I got a 2012 with the 3.6. Woke up one morning for work and heard it knocking/ticking. PO303 is the only code (misfire cylinder 3) changed spark plug. No result. Swapped coils. No result. Friends that know more than me think it’s top of the motor. There’s also substantial blow by coming from oil fill tube and (pcv) tube. Any ideas? Rings? Valve? Knocking will go away at idol.
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08-18-2021, 08:15 AM
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#2 |
    Drives: 2012 Victory Red LFX Join Date: Dec 2012
Location: west central Texas
Posts: 1,310
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What did the old plug look like?
Wet? Black? Is it actually getting spark?
__________________
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.
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08-18-2021, 08:27 AM
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#3 |
 
Drives: 2011 Camaro SS LS3 Join Date: Oct 2020
Location: Clemson, SC
Posts: 68
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Is it the RS? Do you have any way to measure oil pressure?
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08-18-2021, 08:57 AM
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#4 |
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Drives: 2012 Camaro Join Date: Aug 2021
Location: Dayton, Ohio
Posts: 5
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I do not
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08-18-2021, 08:58 AM
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#5 |
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Drives: 2012 Camaro Join Date: Aug 2021
Location: Dayton, Ohio
Posts: 5
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Not an RS
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08-18-2021, 08:59 AM
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#6 | |
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Drives: 2012 Camaro Join Date: Aug 2021
Location: Dayton, Ohio
Posts: 5
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Quote:
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08-18-2021, 09:29 AM
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#7 |
   
Drives: 2012 2SS/RS, 1968 SS Join Date: Feb 2012
Location: Southeast, PA
Posts: 2,093
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Then now you need to look at the injector on that cylinder. You've checked spark, now let's check fuel.
__________________
LS3 Crate Engine Swap | CSP Custom Cam 232/240 .615/.615 113 +3 | Stainless Power LT Headers | Z28 Intake | Borla S-Type Exhaust | FTI Triple-Disc Billet 3200 Stall
2012 Camaro 2SS/RS | 1968 Camaro SS | 2020 Cadillac CT5 Premium Luxury | 2021 Spark LS  |
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08-18-2021, 11:36 AM
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#8 |
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Drives: 2012 Victory Red LFX Join Date: Dec 2012
Location: west central Texas
Posts: 1,310
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Before i went any farther i would double check just to be sure.
Fire it up, shut it off immediately and check for raw fuel on the #3 plug. If wet fuel is ok and probably a no spark condition. If dry then you might have a plugged/bad injector.
__________________
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.
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08-18-2021, 12:42 PM
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#9 | |
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Drives: 2012 Camaro Join Date: Aug 2021
Location: Dayton, Ohio
Posts: 5
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Quote:
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08-18-2021, 02:26 PM
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#10 | |
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Drives: 2012 2SS/RS, 1968 SS Join Date: Feb 2012
Location: Southeast, PA
Posts: 2,093
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Quote:
Not having fuel in the cylinder while it is sparking
__________________
LS3 Crate Engine Swap | CSP Custom Cam 232/240 .615/.615 113 +3 | Stainless Power LT Headers | Z28 Intake | Borla S-Type Exhaust | FTI Triple-Disc Billet 3200 Stall
2012 Camaro 2SS/RS | 1968 Camaro SS | 2020 Cadillac CT5 Premium Luxury | 2021 Spark LS |
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08-18-2021, 09:01 PM
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#11 |
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Drives: 2012 Victory Red LFX Join Date: Dec 2012
Location: west central Texas
Posts: 1,310
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And it would blow a ton of air back thru the PCV, etc.
__________________
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.
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| Tags |
| 3.6, knocking, ticking, v6 camaro |
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