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Any guesses why it left me stranded?

2014 garage queen. Only 42k miles. Never tracked. Driven pretty conservatively. Oil changed every 5k. Stock. On freeway going with flow of traffic and heard loud pop, then a bunch

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Old 12-27-2020, 03:17 PM   #1 (permalink)
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Default Any guesses why it left me stranded?

2014 garage queen. Only 42k miles. Never tracked. Driven pretty conservatively. Oil changed every 5k. Stock.

On freeway going with flow of traffic and heard loud pop, then a bunch of light gray smoke from tail. Engine died and coasted to the shoulder. She wouldn't even crank.

After being towed I looked under hood. No visible signs of damage. I checked the oil. Level looked a little high and possibly a little lighter in color. I'm hoping I'm not seeing water in there. If so, it wasn't real obvious and level might have been high because it was parked on an incline

Any guesses? It's at the shop now so I'll probably find out tomorrow.

Thanks in advance
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Old 12-27-2020, 04:18 PM   #2 (permalink)
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To be honest - no idea since it sounds like you kept up with all the maintenance - but do us a favor and let us know what the shop said about it - that seems really weird. I'm sure other more experienced Z owners will be able to chime in with some of their thoughts.
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Old 12-27-2020, 04:23 PM   #3 (permalink)
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were there any fluids leaking from underneath the car?
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Old 12-27-2020, 05:26 PM   #4 (permalink)
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No fluids leaking. I did seem to notice what sounded like a light rumble or vibration about the time of the pop and smoke. The sound seemed to be right in front of me (on the driver's side under the hood).
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Old 12-27-2020, 05:37 PM   #5 (permalink)
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The only time I've heard some's Z go pop and seen billows of smoke turned out to be a busted A/C compressor. He was supercharged though so idk. Seems unlikely given your car's history. Good luck with your findings
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Old 12-27-2020, 06:18 PM   #6 (permalink)
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I am not sure what happened to it but it doesn't sound good.
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Old 12-27-2020, 06:21 PM   #7 (permalink)
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I am not sure what happened to it but it doesn't sound good.


The the pop followed by the light gray smoke is what worries me.
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Old 12-28-2020, 09:57 AM   #8 (permalink)
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Please do let us know what the shop says. Your Z describes mine to a T but with a few more miles.

I don't have a good feeling about your issue, but best of luck!
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Old 12-28-2020, 10:29 AM   #9 (permalink)
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Thanks guys. Hoping to hear something from the shop by end of day. Will keep you posted.
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Old 12-28-2020, 10:56 AM   #10 (permalink)
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Gray or white smoke? My friends g37 has blown off its coolant hose a couple of times.
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Old 12-28-2020, 11:00 AM   #11 (permalink)
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Thanks guys. Hoping to hear something from the shop by end of day. Will keep you posted.
When you tried to restart. Did the motor turn over, tried to turn over, or it just locked up?
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Old 12-28-2020, 04:30 PM   #12 (permalink)
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When tried to start, it never got to even trying to turnover - sounded locked up. There was current going to the starter.

I'm really thinking the engine is seized and i can't image why. This thing has never even been red-lined. Never ran hot. Oil level was normal. No symptoms at all. Hasn't been driven in the rain in years, so don't see how there could be water intrusion from outside.

Still waiting to hear the news from the shop.
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Old 12-28-2020, 08:48 PM   #13 (permalink)
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What is the longest you typically let it sit without driving?
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Old 12-28-2020, 09:19 PM   #14 (permalink)
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A slow coolant leak, eventually passed tipping point, overheated and melted pistons?
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Old 12-28-2020, 10:44 PM   #15 (permalink)
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A slow coolant leak, eventually passed tipping point, overheated and melted pistons?
Nah. Overheat would seize a piston. Once it cooled down, it might crank over. It wouldn't melt a piston.
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