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Old 05-07-2015, 10:56 AM   #1
Nystyle_Protég
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03 750 need guidance on smoking

Purchased a used 03 gsxr 750 with about 11k on the dash. Had full yoshi exhaust. I installed a k&n air filter. I cleaned out the tank and flushed fuel pump. Clogged with rust (wouldn't rev past 10k and sputtered ) that's fixed but it's smells as if it is running lean and blowing a cloud of smoke.bluish blackish. No power commander. Ran a clutch saftey switch bypass with a relay (so no limp home mode) coolant is fine not losing any at all.new plugs installed (ngk iridium ix. Recent oil change done with rotella t 15w-40 & k&n filter smoked prior to and continues to smoke. Not all the time just on random occasions. Any insight would do. I'm automotive tech 5+ years fairly mechanically inclined. I had a guy tell me to install a PC and that would fix it due to running on stock tune with performance add-ons. Let the comments roll.
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Old 05-07-2015, 11:04 AM   #2
bluewave18
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Have you ridden it enough to tell if you are losing oil? Full exhaust and to PC can create a lean condition.
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Old 05-07-2015, 01:12 PM   #3
Japawhat02
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maybe too much filter oil?
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Old 05-07-2015, 01:45 PM   #4
bluewave18
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My Busa would blow a little on the decel. Alans 1000 always smoked on decel
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Old 05-07-2015, 01:57 PM   #5
40acres
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A quick glance at your plugs should tell you whether you're lean or rich. With that said, my buddy's old '03 1K would smoke a little bit from time to time. Like, a LITTLE bit. A power commander might help, but a proper tune would be ideal paired with the PC.
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Old 05-13-2015, 08:36 AM   #6
Nystyle_Protég
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I'll pull the plugs and snap a pic see what you guys think. After the pump cleaned I was able to redline but it still smells as if it were dumping gas. No codes STV is lined up in the middle.
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