i30 Owners Club

GOT PROBLEMS OR ISSUES? => PETROL => Topic started by: mullsie on September 23, 2020, 02:02:54

Title: 2010 i30 misfire
Post by: mullsie on September 23, 2020, 02:02:54

Hi everyone,
I have a 2010 i30cw with 130k on it which started to misfire badly 2 minutes into a 5 minute drive.

I checked with an OBDII reader and there were random misfires on all cylinders but  most were on cylinder 3.

I had a mobile mechanic take a look who replaced the plugs, leads and coils - but the car is still misfiring. His guess is it might be a small hole in the head gasket because the car is getting hot so fast.

I tried some Rislone head gasket fix and it didn't seem to help but when I connected the OBDII reader again 99% of misfires are on cylinder 2 now with none on cylinder 3 .

This is a old car and its getting expensive. Any ideas on this?
thanks for your answers

Title: Re: 2010 i30 misfire
Post by: mullsie on September 24, 2020, 04:27:51

Resolved - One of the new spark plug leads was faulty :)

Title: Re: 2010 i30 misfire
Post by: CraigB on September 24, 2020, 09:42:03

Thank for the update, I'm glad you solved it :goodjob:

Title: Re: 2010 i30 misfire
Post by: Shambles on September 24, 2020, 09:56:57

 :wss:

Strange, though, that it was misfiring before your mech replaced the leads and still misfired after  :Dunno:

That suggests it wasn't the leads at all, but maybe how the leads were connecting...  :Cuppa:

Glad it's sorted.