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02-26-2020, 08:15 PM
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#1 |
 
Drives: 19’ Camaro SS 1LE Join Date: Nov 2016
Location: SoCal
Posts: 309
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Burnt intake valve... 2019 1LE
Car has 13,xxx miles.
Was experiencing some issues with the 1LE... Rough idle, check engine light, forcing me out of active rev match... ‘Service rear axle/stabilitrack’ kept popping up, along with the other issues mentioned above. Dealership initially thought it was due to bad injectors, and replaced a few of those, and cleaned the spark plugs. Issues resurfaced the next day. Stopped by the shop today to get an update, and was told that my intake valve was burnt. How common is this issue, and what would cause this?
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2019 Camaro SS 1LE
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02-26-2020, 09:00 PM
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#2 |
     
Drives: 2016 2SS Convertible Join Date: May 2012
Location: St. Louis, MO
Posts: 1,710
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Was the fuel injector replaced on the same cylinder as the burnt valve?
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02-26-2020, 09:14 PM
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#3 |
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NOXQCES ZL1
Drives: 2017 Camaro ZL1 Join Date: Mar 2019
Location: Huntsville AL
Posts: 307
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Unless I’m lot seeing something....That intake valve isn’t burnt. It isn’t closing due to carbon buildup.
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02-26-2020, 09:31 PM
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#4 | ||
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Drives: 19’ Camaro SS 1LE Join Date: Nov 2016
Location: SoCal
Posts: 309
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Quote:
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2019 Camaro SS 1LE
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02-27-2020, 09:01 AM
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#5 |
   Drives: 17 Camaro SS 1LE & 16 Sierra AT CC Join Date: Nov 2016
Location: Norman, OK
Posts: 2,424
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Yep, that is the downside to DI. That is carbon coking and if 1 intake valve has it, several others have it as well.
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2019 Corvette Z06 2LZ A8 - Halltech CAI, AWE non-catted X-pipe, Mamo V2 ported TB 592rwhp, bone stock 566rwhp
2017 Camaro SS 1LE - Procharger D1SC w/ Tial 2" BOV & Race intercooler / ARH full length catless headers / Alky meth injection system - 650rwhp on conservative tune SOLD |
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02-27-2020, 10:59 AM
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#6 |
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Account Suspended
Drives: 19 Camaro SS 1LE, 03 Ford Lightning Join Date: Nov 2019
Location: South Carolina
Posts: 334
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Dual injection FTW.
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02-27-2020, 11:18 AM
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#7 | |
 
Drives: 2019 1LE Join Date: Nov 2019
Location: NW
Posts: 137
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Quote:
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"That my friend.. is the sweet succulent sound of the car preparing to ignite the wonderfully tasty nectar your V8 needs to send the screaming bald eagles furiously from the 4 pipes out of the rear of your vehicle"
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02-27-2020, 11:34 AM
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#8 |
   
Drives: 2016 1ss camaro Join Date: Feb 2016
Location: 909
Posts: 9,812
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lol jesus christ hope you not putting 87 in that poor car haha
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 16 1SS NIGHTFALL GRAY METALLIC WITH NPP #BECAUSERACECAR #SAVETHEMANUALS |
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02-27-2020, 01:50 PM
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#9 |
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Daily Driven 1LE
Drives: 2018 1SS 1LE Join Date: May 2018
Location: Fort Knox, KY
Posts: 293
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"How common is this issue." Well as far as I know you're patient #1.
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2018 1SS 1LE
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02-27-2020, 10:09 PM
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#10 | ||
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Account Suspended
Drives: 19 Camaro SS 1LE, 03 Ford Lightning Join Date: Nov 2019
Location: South Carolina
Posts: 334
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Quote:
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A motor with port injection washes off the back of the intake valve. When you go DI your not washing off the back of the valves. Dual injection uses both direct and port injection. You get the benefits of both and they cancel out each others negatives. I believe Toyota came up with the idea. Ford seems to have seen the most success or benefits from it. Motors like the pre-17 Ecoboost V6's and a few other DI Fords had back carbon buildup issues. When Ford came out with the GEN3 Coyote for the 2018 model year they went straight from port injection to dual injection to combat the issue before it became one. |
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02-28-2020, 06:31 AM
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#11 |
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Drives: 2018 1SS M6 Join Date: Nov 2014
Location: Houston
Posts: 2,617
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I know on the LT5 the dual injection kicks in at WOT, or near it. The reasoning was getting enough fuel for the larger S/C.
As far as the valve, maybe the valve itself was faulty. The other thing I can think of is if the valve seat is off, or if there is an issue with the manifold seal on that cylinder causing unmetered air in the chamber, making that cylinder run lean? |
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02-28-2020, 06:53 AM
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#12 |
 Drives: 2018 ZL1 White Join Date: Apr 2019
Location: Greenville SC
Posts: 26
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What fuel are you using? Thats way too much buildup for 13K miles.
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02-28-2020, 08:13 AM
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#13 |
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Account Suspended
Drives: 19 Camaro SS 1LE, 03 Ford Lightning Join Date: Nov 2019
Location: South Carolina
Posts: 334
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I wonder if you could spray some SeaFoam or something similar into the intake track every so often to clean the valves? Get the motor up to temperture and spray into the TB or something.
With these modern, higher-compression cars with sensitive electronics is SeaForm would be good to use on them or not? Still it would just be like spraying some very high octane into the cylinder so I don't see where it could really hurt the car. |
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02-28-2020, 08:37 AM
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#14 | |
Drives: Hyper Blue 2016 2SS 6M Join Date: Sep 2017
Location: North Ga
Posts: 1,786
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Quote:
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Baby Blue
2016 Hyper Blue 2SS/6m/MRC/NPP/Silver Rally stripes/ZL1 wheels & brakes/GForce DS and axles/ZLE Cradle Bushings/FE4 ARB front & rear/SEMA Grill/Rotofab dry/95mm TB/Magnuson 2300/Full LT4 fuel system/JMS boost-a-pump/E85 Sensor/Ported CID heads from LME/Cammotion PD cam/Thompson Motorsports forged shortblock/catted Kooks 1 7/8 headers /JRE remote tuned |
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