CDT Posted December 9, 2018 Report Share Posted December 9, 2018 Hello everyone. I have an 01 LS430 and noticed that when I am driving and step on the accelerator "punch it" I am getting a cloud of exhaust in my rear window deck. If I am driving around at normal speeds with normal acceleration there is no problem. Has anyone else experienced this? Quote Link to comment Share on other sites More sharing options...
Lexus Owners Club Posted December 11, 2018 Report Share Posted December 11, 2018 Sounds like carbon build up within the engine....maybe worth running an additive in the fuel to clean it up followed by an Italian Tune-up.....that should do the job nicely Quote Link to comment Share on other sites More sharing options...
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