2.0 TFSI BWJ 240 Idle Misfire

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n0ble

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	2.0 TFSI BWJ 240 Idle Misfire « on: June 21, 2014, 08:19:01 PM »

Hey All,

This isn't really causing me an issue, but i would like to get to the bottom of it.

The car seems to misfire on idle once left for a few minutes and misfire counter kicks in and always registers on the same cylinder.

I have had plugs and coils replaced and also swapped injectors around, the car has also had a carbon clean and still i get misfires on the same cylinder on idle... Any ideas?

I'm hoping that the rod on that piston is not very very slightly bent or something.

Thanks


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vagenwerk

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	Re: 2.0 TFSI BWJ 240 Idle Misfire « Reply #1 on: June 22, 2014, 06:22:16 AM »

compression test ?


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n0ble

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	Re: « Reply #2 on: June 22, 2014, 07:28:05 AM »

Full leak down/compression test has been done... All good


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vagenwerk

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	Re: 2.0 TFSI BWJ 240 Idle Misfire « Reply #3 on: June 24, 2014, 08:00:42 AM »

what about values ?


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n0ble

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	Re: « Reply #4 on: June 24, 2014, 02:37:10 PM »

I had them replaced with the S3 valves as original valves were causing misfires at higher rpm on higher boost due to valve float.


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adam-

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	Re: 2.0 TFSI BWJ 240 Idle Misfire « Reply #5 on: June 24, 2014, 03:35:11 PM »

Does it only do it once up to temp? Tried gapping that one plug a little less? A little more dwell time on the coils, maybe?


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nokiafix

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	Re: 2.0 TFSI BWJ 240 Idle Misfire « Reply #6 on: January 12, 2015, 12:48:58 PM »

What was the issue N0ble? I have seen this exact same issue from duff injectors which lead to a melted piston on the same cylinder when running 1.7bar at 460hp..


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majorahole

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	Re: 2.0 TFSI BWJ 240 Idle Misfire « Reply #7 on: February 09, 2015, 06:59:37 PM »

+1 it could help future users too, thanks


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4ringpieces

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	Re: 2.0 TFSI BWJ 240 Idle Misfire « Reply #8 on: February 19, 2015, 10:46:00 AM »

I've seen a couple of occurrence's where the ecu was at fault on these, swap it out with a known good one to be sure


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vwaudiguy

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	Re: 2.0 TFSI BWJ 240 Idle Misfire « Reply #9 on: February 19, 2015, 06:33:33 PM »

Why does a bent rod come to mind? Ever ingest water?


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"If you have a chinese turbo, that you are worried is going to blow up when you floor it, then LOL."

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