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Cardoctor74
Cardoctor74, ASE Certified Technician
Category: Hyundai
Satisfied Customers: 25954
Experience:  Master ASE Technician
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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: 5 years ago.
Category: Hyundai
Expert:  SuperDave replied 5 years ago.

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


  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)


  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 5 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 5 years ago.
Yes, all you need is a cheap voltmeter.
Customer: replied 5 years ago.
I forgot to metion that the coil packs were replaced in may does that make any difference?
Customer: replied 5 years ago.
Relist: Other.
general answer not to informative and didn't tell me anything I haden't already heard
Expert:  Cardoctor74 replied 5 years ago.
Different expert here.Has timing and compression been checked?Is the engine light on with a P0301 code?