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Title: 2.0 TFSI BWJ 240 Idle Misfire Post by: n0ble 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 Title: Re: 2.0 TFSI BWJ 240 Idle Misfire Post by: vagenwerk on June 22, 2014, 06:22:16 AM compression test ?
Title: Re: Post by: n0ble on June 22, 2014, 07:28:05 AM Full leak down/compression test has been done... All good
Title: Re: 2.0 TFSI BWJ 240 Idle Misfire Post by: vagenwerk on June 24, 2014, 08:00:42 AM what about values ?
Title: Re: Post by: n0ble 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.
Title: Re: 2.0 TFSI BWJ 240 Idle Misfire Post by: adam- 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?
Title: Re: 2.0 TFSI BWJ 240 Idle Misfire Post by: nokiafix 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..
Title: Re: 2.0 TFSI BWJ 240 Idle Misfire Post by: majorahole on February 09, 2015, 06:59:37 PM +1 it could help future users too, thanks
Title: Re: 2.0 TFSI BWJ 240 Idle Misfire Post by: 4ringpieces 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
Title: Re: 2.0 TFSI BWJ 240 Idle Misfire Post by: vwaudiguy on February 19, 2015, 06:33:33 PM Why does a bent rod come to mind? Ever ingest water?
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