Welcome to DC Carlos. I hope it is something minor
2022 C8 Misfire
Parked my '22 C8 with 1,620 miles on it in the garage weekend before last after cruise around the town. Now, finally getting more time to drive it I fire it up and there's a slight sensation indicating a misfire, the driver side exhaust is ~150 degrees cooler and the dash is upset; flashing service engine light, a rear axle engagement warning, traction control warning, etc. Seems the misfire kicked in a default mode(s) and I pulled codes P0303 and P050D. Nothing appears out of order, no evidence of rodents and I've not hammered the car, haven't rev'd it nor broken the tires loose. Its extremely satisfying to crank the tunes and settle in for a cruise. Plus I'm fortunate to be original owner of a C5 6-speed for pushing the limits and for commuting I have a paddle-shift C6 with over 130k on the odometer.
Reaching out I have been told of a new unsold '22 breaking a valve spring while on test drive from a service manager but my motor isn't trying to bust loose from the mounts indicating such a catastrophic failure. A recently retired dealership Corvette specialist I know heard of a '22 with a #3 cylinder misfire but wasn't aware of the details. It'll take me a few days to arrange getting it into the shop but anyone have any thoughts in the meantime? Thank you very much for the help, Carla
Reaching out I have been told of a new unsold '22 breaking a valve spring while on test drive from a service manager but my motor isn't trying to bust loose from the mounts indicating such a catastrophic failure. A recently retired dealership Corvette specialist I know heard of a '22 with a #3 cylinder misfire but wasn't aware of the details. It'll take me a few days to arrange getting it into the shop but anyone have any thoughts in the meantime? Thank you very much for the help, Carla
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Welcome to the DC Carlos. I’m inclined to let the dealership figure this one out. On a C8 all we can do is speculate and that is a rabbit hole in it’s self. I’d let the 8 set and drive one of the other C’s.
On an other note three corvettes what a person. When are you going to get a C7 and have a royal flush. Best of luck.
On an other note three corvettes what a person. When are you going to get a C7 and have a royal flush. Best of luck.
Your welcomes are really encouraging. BTW, I've actually been around here for years having done various levels of builds including several frame-off builds being hooked up to a posse of folks with the desire and the money. It does look like I was being shallow mentioning the vettes but my purpose was to establish more than a minimum level of awareness to help get to the point yet your replies are positive, nonjudgemental.
My C8 contacts have retired, moved on with ownership changes, etc, leaving me vulnerable so I've done my research, interviewed a couple dealerships/warranty work providers and their vette techs to find one who's been to the classes and wants to be a leader. My last contact became a buddy over the years, loved being a vette cheerleader working to do the best possible for everyone and he's now being eternally rewarded on 'cloud C9'
Hopefully, I'll get the car to the shop early next week, successfully resolve the issue and my curiosity to come away with a great experience and a new recommendable contact...we'll see.
In the meantime and going forward am curious to continue to field your comments.
Thank you very much for your help!
My C8 contacts have retired, moved on with ownership changes, etc, leaving me vulnerable so I've done my research, interviewed a couple dealerships/warranty work providers and their vette techs to find one who's been to the classes and wants to be a leader. My last contact became a buddy over the years, loved being a vette cheerleader working to do the best possible for everyone and he's now being eternally rewarded on 'cloud C9'
Hopefully, I'll get the car to the shop early next week, successfully resolve the issue and my curiosity to come away with a great experience and a new recommendable contact...we'll see.
In the meantime and going forward am curious to continue to field your comments.
Thank you very much for your help!
The comment was not a diss if I could I’d have more than one. Just admiring someone who could have the means to really Immerse themselves in the corvette world. The C7 comment was an attempt at humor.
Ha! I was actually complimenting you and the others as there are those who are quick to judge negatively and all of you were considerate and welcoming.The comment was not a diss if I could I’d have more than one. Just admiring someone who could have the means to really Immerse themselves in the corvette world. The C7 comment was an attempt at humor.
I love the humor but moreso I love sarcasm!
Especially if it only takes a little off the top as it goes over and I have to think about it for a moment to grasp it.
So all is good and your follow up reply is proof of the good nature represented here.
Thank you very much!
If this happened to me, I would call the service managers at at least two dealerships. If they don't agree call some more. Put that possible broken valve issue in front of them and see what they say. Obviously, you are concerned about even starting it muchless driving it to a dealership, so get comfortable about the risk or have it flat bedded to the dealer you are most comfortable with. JMHO
Proximity coil is bad, you have 8 on newer v8 engines, one per cylinder, common thing on new vehicles with hardly any miles is to get a bad coil from factory. This bad coil could easily affect other systems that rely on throttle position sensor/engine load/knock sensor, o2 sensors that now read unburnt fuel in exhaust, etc, since you'll have a considerable drop in horsepower with a cylinder not firing at all , it will affect the entire engine management system....This is my educatedParked my '22 C8 with 1,620 miles on it in the garage weekend before last after cruise around the town. Now, finally getting more time to drive it I fire it up and there's a slight sensation indicating a misfire, the driver side exhaust is ~150 degrees cooler and the dash is upset; flashing service engine light, a rear axle engagement warning, traction control warning, etc. Seems the misfire kicked in a default mode(s) and I pulled codes P0303 and P050D. Nothing appears out of order, no evidence of rodents and I've not hammered the car, haven't rev'd it nor broken the tires loose. Its extremely satisfying to crank the tunes and settle in for a cruise. Plus I'm fortunate to be original owner of a C5 6-speed for pushing the limits and for commuting I have a paddle-shift C6 with over 130k on the odometer. Reaching out I have been told of a new unsold '22 breaking a valve spring while on test drive from a service manager but my motor isn't trying to bust loose from the mounts indicating such a catastrophic failure. A recently retired dealership Corvette specialist I know heard of a '22 with a #3 cylinder misfire but wasn't aware of the details. It'll take me a few days to arrange getting it into the shop but anyone have any thoughts in the meantime? Thank you very much for the help, Carla
Proximity coil is bad, you have 8 on newer v8 engines, one per cylinder, common thing on new vehicles with hardly any miles is to get a bad coil from factory. This bad coil could easily affect other systems that rely on throttle position sensor/engine load/knock sensor, o2 sensors that now read unburnt fuel in exhaust, etc, since you'll have a considerable drop in horsepower with a cylinder not firing at all , it will affect the entire engine management system tripping many powertrain codes!....This is my educated 2 centsParked my '22 C8 with 1,620 miles on it in the garage weekend before last after cruise around the town. Now, finally getting more time to drive it I fire it up and there's a slight sensation indicating a misfire, the driver side exhaust is ~150 degrees cooler and the dash is upset; flashing service engine light, a rear axle engagement warning, traction control warning, etc. Seems the misfire kicked in a default mode(s) and I pulled codes P0303 and P050D. Nothing appears out of order, no evidence of rodents and I've not hammered the car, haven't rev'd it nor broken the tires loose. Its extremely satisfying to crank the tunes and settle in for a cruise. Plus I'm fortunate to be original owner of a C5 6-speed for pushing the limits and for commuting I have a paddle-shift C6 with over 130k on the odometer.
Reaching out I have been told of a new unsold '22 breaking a valve spring while on test drive from a service manager but my motor isn't trying to bust loose from the mounts indicating such a catastrophic failure. A recently retired dealership Corvette specialist I know heard of a '22 with a #3 cylinder misfire but wasn't aware of the details. It'll take me a few days to arrange getting it into the shop but anyone have any thoughts in the meantime? Thank you very much for the help, Carla
Thank you very much for your 2 cents. I think your input is worth much more! I recently installed an MSD coil pack on an '08 Z06 and already have a replacement coil on order with one having died. At least its an easy diagnosis and repair.Proximity coil is bad, you have 8 on newer v8 engines, one per cylinder, common thing on new vehicles with hardly any miles is to get a bad coil from factory. This bad coil could easily affect other systems that rely on throttle position sensor/engine load/knock sensor, o2 sensors that now read unburnt fuel in exhaust, etc, since you'll have a considerable drop in horsepower with a cylinder not firing at all , it will affect the entire engine management system tripping many powertrain codes!....This is my educated 2 cents
The problem turned out to be a carbon-fouled plug. Mechanic cleaned it, cleared codes and car runs great.
So why would the plug foul? I drive the car bit harder now, occasional blasts as was reco'd by the mechanic. But why would a plug load up? All the lean-tech on this car and a plug loads up? It is a C8.R and I've not gathered the full extent of the additions to the car, like fuel mapping changes, if the motor is even anything more than stock. I'm just not clear for the inconsistencies in info about the car that makes it a C8.R.
BTW, I had the car on my lift and almost pulled the plug myself but decided to rollback deliver it to the dealer after I checked out their vette tech. It was a warranty repair and it should be noted. In the process I found a great tow company and the people at the dealership handled my car with care, kept it inside and off limits as it garnered ALOT of attention. The vette tech is a friend now. He was clean, organized and careful, fully grasping my concerns and expectations. He checked the condition of the plug, the resistance same as I would.
The car just shut down, dash lit up with chaos, the axle disengaged and car wouldn't move all because of one fouled plug!
So why would the plug foul? I drive the car bit harder now, occasional blasts as was reco'd by the mechanic. But why would a plug load up? All the lean-tech on this car and a plug loads up? It is a C8.R and I've not gathered the full extent of the additions to the car, like fuel mapping changes, if the motor is even anything more than stock. I'm just not clear for the inconsistencies in info about the car that makes it a C8.R.
BTW, I had the car on my lift and almost pulled the plug myself but decided to rollback deliver it to the dealer after I checked out their vette tech. It was a warranty repair and it should be noted. In the process I found a great tow company and the people at the dealership handled my car with care, kept it inside and off limits as it garnered ALOT of attention. The vette tech is a friend now. He was clean, organized and careful, fully grasping my concerns and expectations. He checked the condition of the plug, the resistance same as I would.
The car just shut down, dash lit up with chaos, the axle disengaged and car wouldn't move all because of one fouled plug!
Technology, ain't it great! Oh the days of points, plugs, condensor, a big 'ol four barrel, Hooker Headers, jacked up front or rear, those were the days..............😁
Yep but their gone. Low fast and a computer for everything. That’s the new normal. If one computer says hey something’s wrong the rest go nope we’re done time for him to walk.
Not gone completely for everyone/ My Model A with 500 cubes of carb pushed power say differently. I don't even have an electric fuel pump
Well some of use were wise enough to keep one or two around.
You know I’m going to have to get down to hoptown and see this car.
You know I’m going to have to get down to hoptown and see this car.
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