"RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars" (rallydarkstrike)
03/18/2018 at 17:20 • Filed to: Oppohelp, Misfire, Hyundai Accent
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"RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars" (rallydarkstrike)
03/18/2018 at 17:20 • Filed to: Oppohelp, Misfire, Hyundai Accent | 0
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Hey all,
Yesterday my Accent developed a misfire that wouldn’t go away and I had to limp it while misfiring about 8km to my mechanic’s garage and leave it there ‘til they can get to it to diagnose. It’s not a long distance, but as we all know when driving our ailing babies, every centimeter was torture to me while doing it...
It’s had a misfire on and off for a few months, but only very rarely, only JUST after starting up when cold, and it would usually go away within a minute of starting it - this time it wouldn’t go away at all. I didn’t have my codereader with me to pull the codes, but the last time it happened last week (where it misfired on cold start and went away within a minute), I pulled the codes with the Torque app on my phone and got these:
It has to be coil packs, spark plugs or injectors, I would imagine? Nothing major? I had the coil packs replaced awhile ago (maybe a year ago?), so I can’t think they’d have worn out yet, but maybe so. I actually don’t know when the spark plugs were last changed. I assume the dealership did it at the last major service I had done there, but can’t recall. I had run some injector cleaner through the fuel system when it did the misfire-for-a-minute-on-startup last week, but that doesn’t seem to have done anything, so guessing not injectors. The last time I pulled the codes it had said a misfire on both cylinder 2 and cylinder 4. Is it common for coil packs to fail at the same time? At any rate, I am rambling. The tank was on about 1/8th full when the misfire started this time (it’s done it before with the tank full), so I don’t think it’s that it pulled up any crud from the tank bottom. I actually stopped to get gas WHILE on my way to the garage with it misfiring as I thought maybe the 1/8th tank I had left was bad fuel, but it kept misfiring even with a fuel tank of fresh gas - that’s when I limped it to the garage.
Would have I have damaged anything by driving those 8km with it misfiring? Hoping not...
Echo51
> RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars
03/18/2018 at 17:24 |
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Pulls the plugs and check them to start with. My mom’s focus had a random misfire/nudging and the plugs were worn and the gap was super big so the coil had issues. Else check wires if any, before starting to swap around coils to see if you can isolate which coil.
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RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars
> Echo51
03/18/2018 at 17:29 |
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I would look myself, but the car is at the garage now - I didn’t want to risk limping it the whole way home for fear of damage. I pretty close to the garage when the misfiring started this time, but I’ll keep your info in mind. They may not be able to pencil me in for a few days, and, if not, maybe I’ll go limp it home anyway and try to look at things myself. Relying on family to drive me around right now, which is a PITA for all involved when we all have different places to be...
sony1492
> RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars
03/18/2018 at 18:14 |
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$5 says it’s an ignition issue, having worn spark plugs could tax a coilpack and lead to it’s untimely failure. So it could be bad plugs that led to bad coilpacks.
Is it a coil on plug system?
Flynorcal: pilot, offshore sailor, car racer and panty thief
> RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars
03/18/2018 at 18:22 |
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I know nothing about your car so apologies if this isn’t a bright question but any chance you’ve got a coil pack for 2/4 and one that’s pushing spark to 1/3? You can see where I’m going with this question.
Timing belt might be the cause as well.
Doesn’t seem likely you’d have two plugs or two wires fail.
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RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars
> sony1492
03/18/2018 at 18:27 |
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Yup, coil on plug system.
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Flynorcal: pilot, offshore sailor, car racer and panty thief
> Flynorcal: pilot, offshore sailor, car racer and panty thief
03/18/2018 at 18:28 |
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I’ve gone down the rabbit hole.
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RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars
> Flynorcal: pilot, offshore sailor, car racer and panty thief
03/18/2018 at 18:30 |
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Doubting timing belt as it was just changed at 90,000kms and I’m at 140,000kms. Service interval for the belt is every 90,000km. Plus, if it were the timing belt, that wouldn’t explain why it was running perfectly fine and then this issue would pop up once in a blue moon for only a moment before going away...this is the first time the issue has ever come up and stayed.
And nope re: coil packs - it’s coil-on-plug!
boxrocket
> RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars
03/18/2018 at 23:56 |
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AFAIK all Accents (and Rios and Souls, as well as Fortes and Elantras with certain engines) have spark plugs due every 30k miles. They take about a half hour to swap, so I’d start there before paying someone to diagnose it.
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RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars
> boxrocket
03/19/2018 at 05:48 |
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Thanks!
pip bip - choose Corrour
> RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars
03/19/2018 at 06:52 |
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plugs is my bet.
use NGK.
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RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars
> pip bip - choose Corrour
03/19/2018 at 16:37 |
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It was plugs and one coil apparently.