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Old 11-08-2024, 01:04 PM   #1
UNH70SS
 
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Zl1 Misfire Update

Looking for advice on an update to a previous post:

Original thread:
https://www.camaro5.com/forums/showthread.php?t=626539

So the dealer finally got back to me with an update. They are claiming the motor needs a rebuild at the tune of $20k.

This seems insane given that the car has only 6k miles and is 10 years old.

Has anyone had any similar issues with their ZL1’s?
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Old 11-08-2024, 01:15 PM   #2
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Get a second opinion, it's very unlikely that you would need a rebuild at 15X the milage you have.
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Old 11-08-2024, 06:32 PM   #3
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Quote:
Originally Posted by bsn View Post
Get a second opinion, it's very unlikely that you would need a rebuild at 15X the milage you have.
Agreed, take it to a reputable shop and get a second opinion. Stay away from them shysters!! No way you need a rebuild with that low mileage!!
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Old 11-08-2024, 10:49 PM   #4
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Quote:
Originally Posted by UNH70SS View Post
Looking for advice on an update to a previous post:

Original thread:
https://www.camaro5.com/forums/showthread.php?t=626539

So the dealer finally got back to me with an update. They are claiming the motor needs a rebuild at the tune of $20k.

This seems insane given that the car has only 6k miles and is 10 years old.

Has anyone had any similar issues with their ZL1’s?
What did they says was causing the miss fire on #4 as there isn’t much to go bad if it were a piston or a rod you would know so it can only be something in the valves, or lifter, or coil pack, wires or plug. Either way I would call GM as it’s still,2024 so you are at 10 years but way under 100,000. Miles.
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Old 11-09-2024, 06:42 AM   #5
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If they can't tell you exactly why it needs a complete rebuild, how can you be sure they're right? A performance engine builder in your area is where I would go. The local drag strip, cars and coffee, etc. Someone will say "There's a guy who's been building LS engines for years.....". Anything but the dealership.
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Old 11-09-2024, 09:43 AM   #6
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If the shop is legitimate then the quote should indicate what the problem is.
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Old 11-23-2024, 07:00 AM   #7
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Had a similar issue and it was a clogged injector........Ran perfect after replacement

Ken
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Old 11-23-2024, 10:17 AM   #8
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Get a compression test and a leak down. Cars that sit a lot can get up to no good. Mechanical componrnts like lifters, bearings, seals, heater cores all need lubricant and fluids moving.

Good luck.
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Old 11-23-2024, 01:15 PM   #9
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What answer do you expect this time? We told you last time it is unlikely and we need more test info to help you.
It is like poping up here saying I have stage3 cancer according to doctor is that correct and not providing any testing of blood or imaging results but expect us to agree or disagree. Its nuts.
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Old 11-24-2024, 08:30 PM   #10
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That post was in July. What has transpired since?
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Old 11-25-2024, 09:10 AM   #11
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Probably nothing! If it were me, and I had all that time between July and now, I would have checked everything from coils, plugs, wires, connectors, valve springs, injectors etc...
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