I know i'm reviving an old thread here but I just thought I would share my recent experience with this issue.
I bought an i30 with the 1.0 GDI-T turbo at the beginning of February. Was fine to begin with but after a few months I started getting the bunny hopping and hesitation that other people have described, accompained by a slight drop in the MPG
I tried to book it in with the dealer I bought it from (who are useless by the way AND the only franchised Hyundai dealer within about 15 miles) but they couldn't look at it for 8 weeks. Yes, 8 weeks. Sheesh what a joke. It was only happening every so often so I did't worry about it too much and just booked it in for when the MOT was due
Unfortunatley the problem got much worse a few weeks ago and the car was jumping around all over the place MPG came down again and sounded kind of rattly at low throttle imputs which I could hear clearly with the window open. Tried the dealers again, basically no help at all didn't even bother to ask what the actual problem was etc told me they were now booking in people for September so basically go away and wait until you already booked in. Top customer service from a company i'd happily recommend (yeah i don't think so)
Last week I suddenly had a warning light appear on the dashboard and the MPG plummented. Got the book out and discovered it was the exaust particulate filter which I didn't even know was a thing on petrol engines only diesels, or that my car even had one.The book tells you to drive at more than 50mph in a gear higher than 3rd for at least half an hour and hope the light goes off which sounds like you got a 50/50 chance of it working which is not great. Doing some research it seems these Hyundai / Kia GDI engines suffer from this problem far more than any other makes and there appears to be an updated procedure being advised to clear them as they only actually burn off the build up under deceleration. Basically get the engine properly warmed up then jump on the motorway and bring it up to speed with decent revs on (2500-3500) Then just lift completely off the accelerator for at least 5 seconds and allow the revs to drop naturally. Keep doing this over and over again until the light goes off. This worked perfectly for me and after only about 10 minutes the light went off and all the bunny hoping and everything else it was doing dissapeared. Instantly the MPG shot up from about 40 on the current trip to 51. It even sounds different you can tell it's now running properley again
If like me you pretty much only do short or slow speed journeys you will have this happen to you. I guess this probably explains why the previous owner only had the car for 7 months as they probably got fed up with it as they were doing very low mileage. My advice is as soon as you get any sort of odd behavior don't wait for the light to come on, just hit the motorway and do the lift procedure for a few minutes and see if the car starts running properley. I'm not impressed the dealers never told me about this filter when I bought the car. I guess they just wanted my money and not give me any kind of reason to walk away
|