P0306 misfire JK 11-13

[artisanau]

Nanook, just catching up on the site and saw your reply. Yep the same here, replaced the plugs at 72'000KM although supposed to last 240'000 and drove it from the March to Sept, without EML coming on. When it did it was at 6-9 day intervals. Having done a recent compression and leak-by test, its burnt exhaust valves on Cyl 6. If it wasn't for a very minor lumpy idle you'd never suspect it would be that. Its been a lesson for sure.

Going to do it myself. Just trying to source a good supplier of parts from the US and the reason I'm back to the group for some recommendations.

Regards Mark.

[Jeep'ers]

Originally Posted by artisanau

Nanook, just catching up on the site and saw your reply. Yep the same here, replaced the plugs at 72'000KM although supposed to last 240'000 and drove it from the March to Sept, without EML coming on. When it did it was at 6-9 day intervals. Having done a recent compression and leak-by test, its burnt exhaust valves on Cyl 6. If it wasn't for a very minor lumpy idle you'd never suspect it would be that. Its been a lesson for sure.

Going to do it myself. Just trying to source a good supplier of parts from the US and the reason I'm back to the group for some recommendations.

Regards Mark.

Keen to follow your progress here as I’m going to have to do the heads and gaskets on mine too.. keep us posted with progress and where you sourced parts from if you don’t mind..


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[Nanook]

Originally Posted by artisanau

Nanook, just catching up on the site and saw your reply. Yep the same here, replaced the plugs at 72'000KM although supposed to last 240'000 and drove it from the March to Sept, without EML coming on. When it did it was at 6-9 day intervals. Having done a recent compression and leak-by test, its burnt exhaust valves on Cyl 6. If it wasn't for a very minor lumpy idle you'd never suspect it would be that. Its been a lesson for sure.

Going to do it myself. Just trying to source a good supplier of parts from the US and the reason I'm back to the group for some recommendations.

Regards Mark.

Mark,

I replied to your other post as well. Try https://poly4x4.com.au/ for your parts.