Lexus IS250 4GR-FSE Engine Carbon Build-up (merged threads)
#1037
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Just curious, was her VIN number outside the range in the TSB? I have a 2010 IS250 that has been trouble-free so far, and is outside the TSB VIN range (supposedly has the fix off the assembly line), but I am constantly checking back on this thread to see if anyone with a VIN outside the range (mid 2010 or beyond) has experienced carbon buildup related issues. Thanks for any feedback.
#1045
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Just curious, was her VIN number outside the range in the TSB? I have a 2010 IS250 that has been trouble-free so far, and is outside the TSB VIN range (supposedly has the fix off the assembly line), but I am constantly checking back on this thread to see if anyone with a VIN outside the range (mid 2010 or beyond) has experienced carbon buildup related issues. Thanks for any feedback.
#1046
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IDK her vin #. She didn't notice any problems till 25k? I think I read on here there was also a 2011 owner who has the same problems. UPDATE! Her car is going back to dealership. It's shaking and sometimes the idle acts funny. The reverse was also acting up but not anymore. She was wondering about this LEMON LAW? What should we do if the dealership screws this up again? Contact corporate? She really likes this car but hates the problems.
http://www.ncdoj.gov/consumer/automo...lemon-law.aspx
Even if it did they'd have to have failed to repair the same problem at least 4 or more times.
#1047
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1. No recirculation of exhaust gases will keep the intake clean
2. Combine direct + port injection
#1048
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This past 4th of July I manually cleaned my valves. I don't know how bad carbon buildup is on your vehicles, but some VW/Audi engines are plagued with this.
Before:
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After:
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Here's a quick clip of the actual cleaning process:
Before:
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Views: 2433
Size: 98.4 KB](https://www.clublexus.com/forums/attachments/is-2nd-gen-2006-2013/430943d1501351715-lexus-is250-4gr-fse-engine-carbon-build-up-merged-threads-f3e38834.jpg)
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Views: 1452
Size: 75.1 KB](https://www.clublexus.com/forums/attachments/is-2nd-gen-2006-2013/430944d1501351715-lexus-is250-4gr-fse-engine-carbon-build-up-merged-threads-0581d7f2.jpg)
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Views: 1646
Size: 60.7 KB](https://www.clublexus.com/forums/attachments/is-2nd-gen-2006-2013/430945d1501351715-lexus-is250-4gr-fse-engine-carbon-build-up-merged-threads-fc18fa85.jpg)
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Views: 1811
Size: 109.8 KB](https://www.clublexus.com/forums/attachments/is-2nd-gen-2006-2013/430946d1501351715-lexus-is250-4gr-fse-engine-carbon-build-up-merged-threads-0644f55e.jpg)
After:
![Name: 866fe28a.jpg
Views: 1376
Size: 109.6 KB](https://www.clublexus.com/forums/attachments/is-2nd-gen-2006-2013/430947d1501351715-lexus-is250-4gr-fse-engine-carbon-build-up-merged-threads-866fe28a.jpg)
![Name: 3daa75ed.jpg
Views: 3834
Size: 116.7 KB](https://www.clublexus.com/forums/attachments/is-2nd-gen-2006-2013/430948d1501351715-lexus-is250-4gr-fse-engine-carbon-build-up-merged-threads-3daa75ed.jpg)
![Name: 5a479619.jpg
Views: 1443
Size: 115.6 KB](https://www.clublexus.com/forums/attachments/is-2nd-gen-2006-2013/430949d1501351715-lexus-is250-4gr-fse-engine-carbon-build-up-merged-threads-5a479619.jpg)
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Size: 116.5 KB](https://www.clublexus.com/forums/attachments/is-2nd-gen-2006-2013/430950d1501351715-lexus-is250-4gr-fse-engine-carbon-build-up-merged-threads-a2babff3.jpg)
Here's a quick clip of the actual cleaning process:
Last edited by bcinco; 07-07-12 at 03:25 PM.