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I can't say I've experienced this prolonged cranking before engine begins running. Not sure what good boosting would do though as it sounds like a very good cranking speed.

How long has it been occurring? Could it be related to a tank of fuel? How many miles on the car? Original spark plugs? Manual calls for new plugs at 42k miles.
 

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Discussion Starter · #3 ·
I can't say I've experienced this prolonged cranking before engine begins running. Not sure what good boosting would do though as it sounds like a very good cranking speed.

How long has it been occurring? Could it be related to a tank of fuel? How many miles on the car? Original spark plugs? Manual calls for new plugs at 42k miles.
I didn't think it was going to start and I would have to boost it.
It's been happening more within the last week. I've only filled the tank once. Full tank from dealer and I put a full tank, have just over 1000km. I put 87 octane, could that be it? I guess I can try higher octane and see if that helps.
 

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I didn't think it was going to start and I would have to boost it.
It's been happening more within the last week. I've only filled the tank once. Full tank from dealer and I put a full tank, have just over 1000km. I put 87 octane, could that be it? I guess I can try higher octane and see if that helps.

I still don't undestand this "boost" logic. It's not easy to hear in the video but it sounds like you have a strong battery. I assume boost means jumpstart. What good would that do?


I've never put anything but 87 in my car with no issues. Higher octane will not help you. The questions is did you get a bad batch of gasoline.
 

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Discussion Starter · #5 ·
I still don't undestand this "boost" logic. It's not easy to hear in the video but it sounds like you have a strong battery. I assume boost means jumpstart. What good would that do?


I've never put anything but 87 in my car with no issues. Higher octane will not help you. The questions is did you get a bad batch of gasoline.
"Boost logic"??? lol... I just mean that i didn't think the car would start and i would have to jump start the car. With booster cables and another vehicle.

Bad batch of gas? Not sure, i'm only noticing issues on start up. No problems while driving.
 

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Your battery is fine. Jump starting, aka boosting, won’t help you here. Mine doesn’t take as long to start but it does stumble once in a while on a cold start. I’m thinking you may have a fueling issue. Try priming the fuel system before you start the car.

Get in, don’t push the clutch in (or brake in a DCT) and push the start button twice (blue light on). Wait until the fuel pump stops running, then start the car. If it starts normally, it might indicate that air is getting into the fuel system when the car sits.
 

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Discussion Starter · #7 ·
Your battery is fine. Jump starting, aka boosting, won’t help you here. Mine doesn’t take as long to start but it does stumble once in a while on a cold start. I’m thinking you may have a fueling issue. Try priming the fuel system before you start the car.

Get in, don’t push the clutch in (or brake in a DCT) and push the start button twice (blue light on). Wait until the fuel pump stops running, then start the car. If it starts normally, it might indicate that air is getting into the fuel system when the car sits.
I'll give this a try. Thanks.
 

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I own a 2018 Elantra GT Sport.I don't have a battery problem, but haven't been driving it much and would like to put a trickle charger on the battery. I have a Battery Tender, which worked fine when last used. Called the company and they said shouldn't be a problem. They said connect in this order: red lead to battery positive, black lead to battery negative, then plug in.
Does anyone see any problems with this?
 

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I own a 2018 Elantra GT Sport.I don't have a battery problem, but haven't been driving it much and would like to put a trickle charger on the battery. I have a Battery Tender, which worked fine when last used. Called the company and they said shouldn't be a problem. They said connect in this order: red lead to battery positive, black lead to battery negative, then plug in.
Does anyone see any problems with this?
Yes that is correct and do the reverse order when removing. Unplug power cable to tender first then remove connections.
 

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My 2018 GT Sport does the same thing about 1 out of 10 time I start it. I was showing my car to some friends the other day and it almost didn’t start. They laughed. It was embarrassing. It has been doing this consistently in all conditions and different fuel sources for months.
 

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Anyone have issues starting the car? Usually on a cold start it sounds like it's not gonna make it! Couple times I thought I was going to have to boost it!
Did you ever find a solution or the root cause of this problem? I have two 2020 Elantra GT N-Lines (one is a DCT and the other is the manual) and both do it. They only do it when the weather starts to turn cool and it doesn't matter the fuel grade either. Once they start they're fine, but sometimes the crank is every extended to the point where you think it's not going to start. Once it didn't start until tried again. I'd love to know if you took yours to a dealer or if it was fixed at all some othe way.
 
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