2015 Hyundai Accent Cranking But No Starting

Mortada Engineer Wad Madani, Sudan Posted   Latest   Edited  
Question
Driveability
Crank / No Start

Odo 315000 km

2015 HYUNDAI ACCENT

VIN : KMHCT41B6GU860110

1400 CC KAPPA

CVT-CVT 2WD

GASOLINE-UNLEADED

no dtc, replaced fuel pump, removed ignitor connector & checked injectors injecting fuel found normal, returned ignitor connector & checked ignitors, igniting normal, timing has checked, found correct,vvt removed for intake & exhaust has cleaned.

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Scott Owner
Moreno Valley, California
Scott Default
 

Hi Mortada, I don't have a specific answer for your fault, but - if the engine is mechanically sound and has good compression, has good spark, (minimum 25 kV) and the injectors are pulsing... Is this actually gas and combustible? Is the exhaust restricted? Do the IAT and ECT sensors match ambient air temperature? Is the TPS/APP sensor reading closed throttle? Any theft system/Immobilizer…

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Mortada Engineer
Wad Madani, Sudan
Mortada Default
 

Thanks dear sir, The problem Engine Cranking and Starting and dead after 30 Sec. approximately. It's Petrol fuel System and already Fuel Pump has been replaced as an complete assy. Exhaust Not Restricted. IAT and ECT sensors match ambient air temperature. the TPS/APP sensor reading not closed throttle. I've tried another good Crankshaft Sensor. No theft system/Immobilizer DTC's. I've…

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Robert Technician
Trevose, Pennsylvania
Robert Default
 

Start stall does sound like it could be an immobilized problem. Did you check all modules for codes or just PCM?

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Mortada Engineer
Wad Madani, Sudan
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Dear sir Intermittently it reads immobilizer system related code. But when erased it doesn't coming again. I've Launch bluetooth reader, I've scanned all Systems for Pending or Current code but no code and intermittently RPM not reading from DataList : RPM.

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Robert Technician
Trevose, Pennsylvania
Robert Default
 

With intermittent rpm on scan tool I agree with Mr. Zanders . Need to scope ckp/cmp .

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Robert Technician
Trevose, Pennsylvania
Robert Default
   

But also would look closer at intermittent immobilizer code. I find a full system scan, comparative compression, ckp/cmp, ignition and injector scope patterns as well as fuel pressure readings and a good visual inspection usually lead me to the correct fix On a no start. I would say gas analizer readings also but our shops gas analyzer broke and our supervisor won’t get it fixed so I don’t have…

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Khalifah Engineer
Kampala, Uganda
Khalifah Default
 

get Another crank shaft sensor

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Scott Owner
Moreno Valley, California
Scott Default
 

Hi Khalifah, While the CKP sensor could be problematic on this vehicle - If what Mortada posted was tested correctly, and that there is spark and injector pulse, how could a CKP sensor fix this?

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Phillip Diagnostician
Anchorage, Alaska
Phillip Default
 

Possible it it just needs CMP for those. Just the CKP for to tell the computer where the stroke is at. I would do a CAM/Crank correlation waveform if a scope is available.

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Mortada Engineer
Wad Madani, Sudan
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Good point that there is spark and injector pulse, how could a CKP sensor fix this?

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Mortada Engineer
Wad Madani, Sudan
Mortada Default
 

I've Tried Another Good Known One. sameproblem.

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Hollis Technician
Boulder, Colorado
Hollis Default
   

Hello Mortada, I used Google Translate and translated your post to Arabic, I'm assuming that is your native language. I was thinking if you could explain in your language in detail and translate into English it might be more helpful. Here's what googled translated into Arabic from English. I'm not sure how well it translates, worth a try. Hope this helps. لا يوجد dtc ، مضخة الوقود المستبدلة ،…

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Mortada Engineer
Wad Madani, Sudan
Mortada Default
 

Thanks Dear sir If I try to Write in arabic and translate to english it will become inaccurate to translate to english.

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Robert Technician
Trevose, Pennsylvania
Robert Default
 

Did it come on with a bad fuel pump? Do you have a gas analyzer to see what’s coming out the tailpipe?

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Mortada Engineer
Wad Madani, Sudan
Mortada Default
 

Fuel Pump good and already has been replaced as ASSY. I've Not a gas analyzer to see what’s coming out the tailpipe.

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Robert Technician
Trevose, Pennsylvania
Robert Default
   

Also make sure air can get in. Have seen nests, clogged air filters, a plastic bag, shop rags and even a snow packed air filter cause no starts

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Mortada Engineer
Wad Madani, Sudan
Mortada Default
 

Thanks Dear sir Air could get normally. no nests, clogged air filters, a plastic bag, shop rags and even a snow packed air filter cause no starts.

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