100% agreeIn spite of what fear-mongers on the internet will tell you, there is no "common problem" with valve springs or the AFM lifters on these cars. There was a problem with a batch of faulty valve springs on C7s, but that was totally unrelated to the AFM system. There are literally millions of small block Chevy's with AFM on the roads in Canada and the US, with billions of combined miles, and failures are very, very rare.
Must be a hell of a load "ticking" noise to hear over the exhaust? I must listen for it: turn radio off. I replaced OEM exhaust with Paragon Performance , so, may not hear it. Good luck!!!I have a 2023 stingray that I picked up last fall and put on the road in April. It has 3,000 km on it now. Driving it two weeks ago I noticed a ticking sound coming from the engine bay - I could hear it from inside the car. I researched it a bit and found that it seems to be a fairly common thing that most people put down to fuel injector noise. At the same time however I noticed the check engine light came on. I had Onstar read the code for me as a malfunctioning knock sensor. I brought the car in to the local dealer here in Vancouver and they phoned me back the next day saying the actual problem was that on one side of the engine the valve springs were sticking. Apparently this too is a pretty common problem with these engines and their associated fuel saving 4 cylinder mode.....Anyway, not good news as they said they needed to change those springs and to do that they needed to pull the engine from the car. Not happy about that but no choice so I said go ahead. That was 10 days ago. They contacted me last Wednesday to say the springs had been changed and the car would be ready to go today.
Today they call me to tell me that unfortunately the sound is still there - i.e. there was no problem with the valve springs. They commented that when they did the job the springs and cam etc... all looked perfect - because I guess they were. Anyway they now advise that there is a bigger problem deeper inside the engine and they are going to have to remove the engine again and dismantle it completely. Terrible news. They said that likely they will be putting in a new engine but they must dismantle it to identify the problem, submit the paperwork to GM for the new engine authorization etc... I believe it is a very rare thing - the service writer mentioned that the manager of warranties for GM was going to come and see the car once the engine is apart to see for themselves why this happened. The car was broken in properly, oil checked regularly etc... So quite bad news as we are in prime 'Vette season and I had plans for a nice road trip through the interior of BC next week + loss of use of the car for an estimated 4 weeks! I tried to post a video here of the sound it is making however could not do it. Maybe only allowed to post pictures not videos here? I believe this is a rare problem but that doesn't make it any less of a drag.... OK whine over....
I see one photo there.Can someone let me know if the link is working. When I try to attach the file from my phone it is not working.
No they didn't give any opinion on the reason for it at all. I have not spoken to them yet - just the email and phone message they left. I will list here again if any other info becomes available.Sorry to hear about your engine. Did they offer any reason for the failure? Lack of lubrication, wrong clearance in assembly, overheating? You mentioned this was “unusual/rare”, but has anyone else experienced this? If the bearings are completely gone metal has gone through entire engine. I would want a new replacement as well. Best wishes.
You can post videos. Woops late to the party.I have a 2023 stingray that I picked up last fall and put on the road in April. It has 3,000 km on it now. Driving it two weeks ago I noticed a ticking sound coming from the engine bay - I could hear it from inside the car. I researched it a bit and found that it seems to be a fairly common thing that most people put down to fuel injector noise. At the same time however I noticed the check engine light came on. I had Onstar read the code for me as a malfunctioning knock sensor. I brought the car in to the local dealer here in Vancouver and they phoned me back the next day saying the actual problem was that on one side of the engine the valve springs were sticking. Apparently this too is a pretty common problem with these engines and their associated fuel saving 4 cylinder mode.....Anyway, not good news as they said they needed to change those springs and to do that they needed to pull the engine from the car. Not happy about that but no choice so I said go ahead. That was 10 days ago. They contacted me last Wednesday to say the springs had been changed and the car would be ready to go today.
Today they call me to tell me that unfortunately the sound is still there - i.e. there was no problem with the valve springs. They commented that when they did the job the springs and cam etc... all looked perfect - because I guess they were. Anyway they now advise that there is a bigger problem deeper inside the engine and they are going to have to remove the engine again and dismantle it completely. Terrible news. They said that likely they will be putting in a new engine but they must dismantle it to identify the problem, submit the paperwork to GM for the new engine authorization etc... I believe it is a very rare thing - the service writer mentioned that the manager of warranties for GM was going to come and see the car once the engine is apart to see for themselves why this happened. The car was broken in properly, oil checked regularly etc... So quite bad news as we are in prime 'Vette season and I had plans for a nice road trip through the interior of BC next week + loss of use of the car for an estimated 4 weeks! I tried to post a video here of the sound it is making however could not do it. Maybe only allowed to post pictures not videos here? I believe this is a rare problem but that doesn't make it any less of a drag.... OK whine over....
Most dealers, know less than this forum, about our C8s.I hear you. No excuse for that . Hopefully GM refuses to pay them for it given that they should have known. Perhaps they are still on dial up internet or have no idea that search engines exist. Jesus H .
That is some ticking!!!Check this out.
LT 2 engine ticking noise
The LT2 engine in the C8 Corvette can produce a ticking noise, which has been reported by several owners. This noise can be heard while driving at any speed...www.perplexity.ai
Great news!!! Congrats.The engine was finally replaced last week and I drove it for the 1st time yesterday. I was relieved to see that there are no scratches on the car at all - it looks just like when I brought it in - I.e.- like new ( because it is)..,. I drove it yesterday and again today and it was perfect. They did not give a conclusive reason for the engine failure. I have been in touch with GM customer service about compensation for loss of use of the car and am waiting on a decision for that. So the nearly two month saga is over and it feels good to be able to drive it again I must say.