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Yamaha - need help with gremlin removal

Technical Discussion - Yamaha Star Stryker Motorcycle Forum -
2011 had for a few years, cobra intake, cobra sweeps, fi 2000 powrpro. bike was running awesome then a couple of weeks ago started to run on one cylinder then pick up both for awhile and then back to one,here is what I have done;

thought maybe bad gas, I use ethanol free, drained tanks put in fresh gas same result. checked plugs, good spark front was wet back running rich, checked injectors by removing then cleaning, they are perfect, compression test front and rear cylinder 100lbs., removed fi 2000, same result, swapped plugs same thing happening, voltage is 12.65, battery is good, no error codes, cleaned air filter same result, first thing I checked was all connections, they are all solid, fuel pump is working well, I have gone over this machine twice, checked the forums for something I maybe missed, could it be the ECM?
Date: Oct 6, 2017    Labels: Yamaha

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