Screeper
Parking Attendant
2008 ZX 14 Akros, PC, Filter
Posts: 10
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posted April 11, 2008 04:54 PM
NIghtmare dynotune
Just returned from a nightmare dyno tune. found out that oil blowback in the airbox is bad for tune, and a commander gounded to the frame is also bad. Luckily after breaking down on the side of the highway the shop found the issues and corrected them. Of course you know their first question was "did you run out of gas?" Thank god I didnt since embarrasment factor would have been a 10. All is good now.
  
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87gtNOS
Zone Head
Posts: 620
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posted April 12, 2008 05:06 AM
Can you please elaborate on the 'oil blow back'.
Also, please expand on the grounding to frame problem? Was yours a problem only because it was grounded under the coolant reservoir, so the bolt came loose?
Thanks.
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01 ZX12R
07 ZX14 - YEAH BABY!
03 ZX9R-traded in for the 14!!! June 07!
05 636-traded in for the 9 Sept 05
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1badzx12r
Needs a life
Posts: 8321
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posted April 12, 2008 05:34 AM
the blowback is coming from to much oil in motor and blowing up thru crankcase vent
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http://www.youtube.com/watch?v=S06nIz4scvI
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Screeper
Parking Attendant
2008 ZX 14 Akros, PC, Filter
Posts: 10
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posted April 12, 2008 03:15 PM
Thats exactly what it was. The oil was filled to just a fraction about the full line in the sight glass. Obviously the bike is very sensitive to overfill. Especially under hard and high rpm. Drained the overflow from the airbox drain and the bike was back in business. I filled the oil to just under the full line now. The ground was strange. It was grounded just over the reservoir under the left fairing. The ground actually degraded as the bike ran. Possible other electrical grounded to frame ? I dont know. Maybe the fan as the bike quit running after it got hot on the highway. Switched the ground to the engine block and it ran much better with no problems.
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ninja12
Needs a job
Posts: 3310
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posted April 12, 2008 04:12 PM
The frame ground under the reservoir is not a good ground.
It not really a frame ground. Its a brace that is bolted to the frame
and the bolts have loc-tite on them.The brace and frame have paint.
My bike quit on me at the track , same problem.
I spliced into the PC ground wire and ran the SECOND wire to the frame ground at the battery box.
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