How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Cardoctor74 Your Own Question

Cardoctor74
Cardoctor74, ASE Certified Technician
Category: Hyundai
Satisfied Customers: 25357
Experience:  Master ASE Technician
3827149
Type Your Hyundai Question Here...
Cardoctor74 is online now
A new question is answered every 9 seconds

2003 Hyundai sonata: cylinder 1 misfire..v6..fuel injector

Customer Question

I have a cylinder 1 misfire on my 2003 Hyundai sonata, It is a v6 and has had problems starting, possibly fuel injector or fuel pump? Not quite sure what is wrong.
Submitted: 2 years ago.
Category: Hyundai
Expert:  SuperDave replied 2 years ago.

You could have a bad coil.Here is a test for the coil:

Attachments are only available to registered users.

Register Here

Attachments are only available to registered users.

Register Here

Attachments are only available to registered users.

Register Here
View Full Image

Attachments are only available to registered users.

Register Here


  1. Measurement of the primary coil resistance Measure the resistance between
    connector terminals 1 and 2 (the coils at the No. 3 and No. 6 cylinder sides) of
    the ignition coil, and between terminals 2 and 4 (the coils at the No.1 and No.4
    cylinder sides), and between terminals 2 and 3 (the coils at the No.2 and No.5
    cylinder sides).

Standard value: 0.74 ±10% (Ohm)

Attachments are only available to registered users.

Register Here

Attachments are only available to registered users.

Register Here

Attachments are only available to registered users.

Register Here
View Full Image

Attachments are only available to registered users.

Register Here


  1. Measurement of the secondary coil resistance Measure the resistance between
    the high-voltage terminal for the No.3 and No.6 cylinders, between the
    high-voltage terminals for the No.1 and No.4 cylinders and between the
    high-voltage terminals for the No.2 and No.5 cylinders.

Standard value: 13.3 ±15% (kOhm)

CAUTION: When
measuring the resistance of the secondary coil, be sure to disconnect the
connector of the ignition coil

Customer: replied 2 years ago.
Can I get the tool to measure the coils at a parts store what is the easiest way to do that?
Expert:  SuperDave replied 2 years ago.
Yes, all you need is a cheap voltmeter.
Customer: replied 2 years ago.
I forgot to metion that the coil packs were replaced in may does that make any difference?
Customer: replied 2 years ago.
Relist: Other.
general answer not to informative and didn't tell me anything I haden't already heard
Expert:  Cardoctor74 replied 2 years ago.
Different expert here.Has timing and compression been checked?Is the engine light on with a P0301 code?

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P Elm City, NC
< Last | Next >
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P Elm City, NC
  • used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future. David L. Richmond, TX
  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil Marysville, CA
  • Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible. Charles Walnut Creek, CA
  • As a single woman, I really appreciate an excellent and affordable opinion.
    Thank you Geordie, I will not hesitate to contact justanswer in the future!
    Sue Charleston, WV
  • Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff. Jim Castleberry, FL
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
 
 
 

Meet The Experts:

 
 
 
  • George H.

    Hyundai Technician

    Satisfied Customers:

    1485
    Hyundai Gold certified, ASE Master tech 15+ years
< Last | Next >
  • http://ww2.justanswer.com/uploads/joecamel90/2008-11-13_03615_head_shot.jpg George H.'s Avatar

    George H.

    Hyundai Technician

    Satisfied Customers:

    1485
    Hyundai Gold certified, ASE Master tech 15+ years
  • http://ww2.justanswer.com/uploads/RO/rodcuda/2011-7-25_224114_Donhoff1.64x64.JPG Neal's Avatar

    Neal

    Auto Mechanic

    Satisfied Customers:

    594
    Shop Owner and Mechanic on multiple makes.
  • http://ww2.justanswer.com/uploads/DR/drivefast1971/2012-1-12_172422_0009051tQKh.64x64.jpg Ron Z.'s Avatar

    Ron Z.

    - Hyundai Tech -

    Satisfied Customers:

    337
    18+yrs experience. State Inspector and Hyundai Diagnostics
  • http://ww2.justanswer.com/uploads/MI/mikeamechanic/2013-4-2_175558_photo.64x64.JPG Mike Kelly's Avatar

    Mike Kelly

    Hyundai Mechanic

    Satisfied Customers:

    252
    17 years experience as an auto mechanic, foreign and domestic. 5 years running my own repair business.
  • http://ww2.justanswer.com/uploads/jettadan1/2009-7-2_20433_dad_and_kaitlyn.jpg Daniel's Avatar

    Daniel

    Hyundai Technician

    Satisfied Customers:

    247
    Hyundai technician
  • http://ww2.justanswer.com/uploads/tsmodie/2009-6-10_144056_tim.jpg Tim Mohr's Avatar

    Tim Mohr

    ASE MASTER

    Satisfied Customers:

    164
    30 YEARS EXPERIENCE, FORIEGN AND DOMESTIC, GAS AND DIESEL
  • http://ww2.justanswer.com/uploads/AM/amdhcds/2012-4-1_04039_3911361015044607312849462040349387767831419345287n.64x64.jpg AMD's Avatar

    AMD

    Master Technician

    Satisfied Customers:

    156
    L1 Advanced Level Diagnostics Specialist