i30 Owners Club

2012 i30 active hard starting issue.

heaven · 2 · 2640

0 Members and 1 Guest are viewing this topic.

Offline heaven

  • 1st Gear
  • *
    • Posts: 1

    • au Australia

Ever since replacing my fuel pump which didn't need to be replaced(it aint broke but I fixed it :( ), I've had an intermittent starting issue and I've never figured out the cause.

When the car is cold there is a chance it will crank for about 10-15 seconds then start.
When the car is hot and has been sitting for 15-20 mins, for eg. when I run into the shop to grab a few things, there is also a chance it will take 10-15 seconds cranking before it starts.
When I turn the car off then back on again, it fires up almost instantly as if the problem doesn't exist which is why I figured fuel pressure.

At first I thought maybe it's a fuel delivery issue, and perhaps it still could be but I'm not sure so I've created this post to gather some advice on what I should check next.

Below is a list of things I've already done to try figure out what could be causing this issue.

  • I've replaced the fuel pump with the teabag on the end.
  • I've replaced the internal fuel filter of the fuel pump assembly.
  • I've checked fuel pressure to the fuel rail.
  • I've cleaned each injector and tested each one for pressure(they all spray).
  • I've turned the key a few times to activate the fuel pump to ensure pressure is built up.

With all of those things done, nothing has changed. A while back my car died in traffic with a p0106 error code regarding the map sensor but I haven't replaced it($375 OEM) and I haven't had that issue since(car has never died on me since owning it other than that one occurrence so possibly another issue altogether related to map sensor?)

Could it be a crank angle sensor or fuel pressure regulator that has problems? I'm not too sure what else I can check without specialist tools and I want to check everything I possibly can before getting fed up and  taking it to a mechanic lol.

Any helpful advice is greatly appreciated, thanks! :)
  • 2012 i30 active

Offline Kailan

  • 1st Gear
  • *
    • Posts: 2

    • gb United Kingdom
Hi mate, I see its been a while. But did you ever find a resolution to this?
I have a very similar issue on my car. I had to replace a failed fuel pump and have had this exact issue ever since.

  • 2011 Comfort, 5dr Hatch, Petrol 1.6ltr, Auto, Black

Unread Posts


SimplePortal 2.3.5 © 2008-2012, SimplePortal