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I have a 1988 Yamaha 150ETLG. Current situation is only the right side of the motor is getting fire so it’s only running on 3 cylinders. My questions is, is what could possibly make the entire left side loose fire? Is it possible that just those 3 coil packs went out at one time? Just seems a little odd to me every coil pack on one side quit at nose instead of random coils. I’ve checked all the grounds and cleaned them and they all connect to the switch box or cdi box or whatever it’s called and 3 of them are getting fire so why wouldn’t the other 3?