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i took my supra into the shop today to get a pre-emissions test done(i failed my last emissions test). it was only $7, so i thought, what the heck why not. so the guy runs the test, and he tells me it will the pass the 02 test so thats good, but he says its gonna fail the HC test. i think its hyrdogen carbon something, i don't know exactly what it was. he says theres a bunch of unburnt gas or something. so i don't know what i'm gonna do about that. is there a way to make it run leaner??? cuz i have no clue what to do. any help would be great. thx
 
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