[Ant102]

Hello, I drive a 2016 Camaro LT v6 with 92500. 8 speed auto

A month ago the car over revved not so great. Money shift. Now the car has air coming from around cylinder number 2 as well as oil leaking between the headers. The code is: P0302 constant missfires.

The mechanic has told me today the car failed a leak down test and "in his experience in fixing this problem I'm better off buying a new engine". My lack of experience can I get some opinions? He thinks there's a problem with the valve train, possible cam problems, head etc. and said if he replaces all this it can stretch the timing chain or something. Any advice on where to go? Refer back to my older post here labeled "my first post".

I needed to create a new thread because this is pretty serious finacially. Am I really better off replacing the entire engine? Or take it somewhere else? I'm on my third mechanic and chevy did the least efficient work out of all 3.

[Monroe]

What do you mean it over revved? Isn't there a rev limiter? Back to the original question. I can't see how a valve job or replacing head gaskets or a timing chain will be anywhere close to replacing the whole engine. Valve jobs and head gaskets are a common ocurance on older engines. Also your engine Direct Fuel Injection so the valves never get rinsed with the detergents in the gas so the valves get gummed up. All DFI engines have that issue. Unless you have bottom end damage like crankshaft, connecting rods etc. which I doubt you have then I would say just repair it. But I would go online and check the reviews of engine shops that get good reviews. One place to check reviews is yelp.com
https://www.yelp.com/search?find_des...ach%2C+SC&ns=1

[s346k]

better question: how do you over rev an auto? i digress

sounds like piston to valve contract resulting in bent valves, broken piston, or both. id be concerned the same thing happened on more than one cylinder. is #2 the only one with issues?

[Jeb114]

With 90,000 mile on the car get a rebuilt replacement engine. It will cost way more to fix it than replace it, Plus most engines come with a warranty. V6's are not that expensive.

[arpad_m]

As Monroe says, don't ask for opinions in a forum, find an engine builder or a competent shop instead.

Also, there is a rev limiter that is set to a safe value, so even if the transmission somehow failed to upshift, the engine couldn't have been over-revved. I have never heard of a money shift on an auto, especially since you say in another post that what happened was the paddle didn't activate 2nd when you reached the top of 1st, so there was nothing for the trans to "money shift" into.

[Chutzpah]

I’d bring it to a respected performance shop.... ask for options and perhaps, mercy. Maybe a few upgrades if the engine is already torn down??

I’d hate to take a total loss on such a new vehicle. Hopefully, you can get some solid answers and $’s on a repair. Good luck

[BlackbeastSS2]

Don’t go to a performance shop. Get a engine off eBay and get a mechanic to install at his shop and save a lot of money. Picture is an example, get one cheaper without tranny.

This guy is in Mobile, Alabama.

https://www.ebay.com/itm/33392796582...Cclp%3A2499334

[JitteryJoe]

Yeah, it all comes down to how much you trust the mechanic. Assuming he performed the leakdown test right that's generally an indication that the piston hit the valve and at the very least you have some bent valves if not a hole in the piston. I think the mechanic is making the right call because tearing into an engine is a gamble. They could find a simple problem right away and it end up being cheaper but my guess is based on what you're saying odds are not in your favor and there is a good chance you come at the same "new engine" conclusion plus teardown/diagnosis costs for the bad engine. It's better to quote a known quantity.

I personally would be more concerned about how it happened in the first place. I think both the TCM and ECM should both have rev limiter's built in so unless you removed them both I'm pretty puzzled how this could happen. If you have potential trans / TCM / ECM issues I'd almost question if the car is even worth fixing.

[m6-lt1]

If you actually overrevved the engine then I think you should just buy a used engine. They should be <$2,000. I wouldn’t sink much money into an engine build or anything of that nature. My priority would be to just get this car back on the road as quickly and cheaply possible.

[6spdhyperblue]

Originally Posted by s346k

better question: how do you over rev an auto? i digress

sounds like piston to valve contract resulting in bent valves, broken piston, or both. id be concerned the same thing happened on more than one cylinder. is #2 the only one with issues?

How high do u have to over rev a dohc to cause damage?

But yeah how do u money shift an auto?

[KingLT1]

You can't over rev newer cars. They cut fuel and close throttle long before a mechanical over rev would occur.

[LT1ornothing]

Originally Posted by Ant102

Hello, I drive a 2016 Camaro LT v6 with 92500. 8 speed auto

A month ago the car over revved not so great. Money shift. Now the car has air coming from around cylinder number 2 as well as oil leaking between the headers. The code is: P0302 constant missfires.

The mechanic has told me today the car failed a leak down test and "in his experience in fixing this problem I'm better off buying a new engine". My lack of experience can I get some opinions? He thinks there's a problem with the valve train, possible cam problems, head etc. and said if he replaces all this it can stretch the timing chain or something. Any advice on where to go? Refer back to my older post here labeled "my first post".

I needed to create a new thread because this is pretty serious finacially. Am I really better off replacing the entire engine? Or take it somewhere else? I'm on my third mechanic and chevy did the least efficient work out of all 3.

The engine teardown for the official diagnostic is probably going to run several hours in labor, then who knows how bad the damage could be. I would try to find a nice low mileage v6 to pull out at a junkyard from a camaro totalled from the rear. Then pay a shop to do an engine swap. I'm seeing v6s with 20k-50k miles at the junkyard going for about $1,500-$2,000. Maybe $1,000 for the labor engine swap.

[WhiteMale]

Originally Posted by KingLT1

You can't over rev newer cars. They cut fuel and close throttle long before a mechanical over rev would occur.

I agree but I think he's speculating on an over rev and this money shift...I don't know what this is plus it's an auto...seems impossible.

[kropscamaro16]

our buddy money shifted his m6 1le on track and took it to chevy and they replaced the motor for him lol we told him to sell it and buy an auto