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 Mike Kelly Your Own Question

Mike Kelly
Mike Kelly, Hyundai Mechanic
Category: Hyundai
Satisfied Customers: 278
Experience:  17 years experience as an auto mechanic, foreign and domestic. 5 years running my own repair business.
19374685
Type Your Hyundai Question Here...
Mike Kelly is online now

I have a i20 classic and intermittantly during warm up phase

Customer Question

I have a i20 classic and intermittantly during warm up phase I get engine light flashing for few seconds when it warms up no issues. fault started 6 months ago and has had new spark plugs since and showed up a misfire cylinder 2 fault swapped cylinder 2 and 3 spark plugs clear faults , still happens still showing cylinder 2 misfire and random cylinder misfire faults , I always use shell fuel and even tried v+ still occurs i've also tried a fuel cleaner but still occurs its so intermittant but still very annoying. i have taken into a dealer but no help mainly due to the intermittant nature.

Submitted: 2 years ago.
Category: Hyundai
Expert:  indy-tech replied 2 years ago.
Hi .

How many miles do you have on this engine .

What spark plugs are you using .

What malfunction codes did you have

Rgds Greg.

Customer: replied 2 years ago.

The vehicle has covered 29,000 miles and has only ever had genuine spark plugs fitted but as the misfire is still shown on cylinder 2 after swapping cylinder 3 and 2 spark plugs can't see how it could be them. It seems that when the engine reaches operating temp and goes into close loop faze there's never a problem. fault code P0300 random cylinder misfire and P0302 cylinder 2 misfire, i can never get the misfire to occur while looking at it always on warm up phase while driving vehicle which is very frustrating!!.

Expert:  indy-tech replied 2 years ago.
Hi Daniel .

Seen this problem before and turned out to be the injectors ,
What i suggest you do is as you did with the spark plugs swap the misfiring cylinder No. 2 with cylinder No.4 . then test drive and then recheck for codes if the code changes to P0304 then replace that injector.
Remember to clear codes first before the test drive.

Do this then please get back to me .

Rgds Greg

What Customers are Saying:

 
 
 
  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil
< Previous | Next >
  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil
  • 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
  • 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
  • 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
  • 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
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C.
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex
 
 
 

Meet The Experts:

 
 
 
  • Mike Kelly

    Mike Kelly

    Hyundai Mechanic

    Satisfied Customers:

    278
    17 years experience as an auto mechanic, foreign and domestic. 5 years running my own repair business.
< Last | Next >
  • http://ww2.justanswer.com/uploads/MI/mikeamechanic/2013-4-2_175558_photo.64x64.JPG Mike Kelly's Avatar

    Mike Kelly

    Hyundai Mechanic

    Satisfied Customers:

    278
    17 years experience as an auto mechanic, foreign and domestic. 5 years running my own repair business.
  • http://ww2.justanswer.com/uploads/IN/indytech/2013-8-8_102717_SantoDomingo146598x6402.64x64.jpg indy-tech's Avatar

    indy-tech

    Import tech

    Satisfied Customers:

    55
    Work on all import vehicles
  • http://ww2.justanswer.com/uploads/35/350matt/2012-6-7_182356_matsavatr.64x64.jpg Matt's Avatar

    Matt

    Mechanical Engineer

    Satisfied Customers:

    4440
    BEng hons Mech engineering, in auto industry 22 years
  • http://ww2.justanswer.com/uploads/TE/techmachine/0601821347169_717372168_8940977_39623330_o.64x64.jpg Ross's Avatar

    Ross

    Diagnostic and repair technician

    Satisfied Customers:

    453
    Licensed diagnostic and repair technician
  • http://ww2.justanswer.com/uploads/RO/RobMechanic/068.64x64.JPG Rob's Avatar

    Rob

    ASE Certified Technician

    Satisfied Customers:

    82
    30 years trade experience
  • http://ww2.justanswer.com/uploads/UK/ukiaibal/2012-11-9_205920_SAM0109.64x64.JPG uk_iaibal's Avatar

    uk_iaibal

    UK Car Mechanic

    Satisfied Customers:

    1
    Verified Car Mechanic.