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  1. C

    1994 225 hp Mercury SeaPro TPS problem

    When I turn the key on I get the normal beep tones and after about 20 seconds I get a constant beep. I unplugged the TPS and this silenced the alarm. I assumed that the TPS was bad so I replaced it but get the same result. While the alarm is sounding if I move the throttle arm at the side of...
  2. C

    1994 225hp backfiring

    I have a 1994 3.0l 225hp offshore outboard that is backfiring through what appears to be emission tubes coming from the head. I have changed three bad coils and the backfire occurs at idle but is more prevalent at higher RPM's. It either blows the tubes off or it has blown a hole in a couple...
  3. C

    Need to know my Mercury year model but serila number is unreadable

    I am new to the board and need some help. I recently acquired a Mako 211 and it is equipped with a 225hp offshore model. I can't read the first three digits of the serial number on the tag so I can't go that route to figure out what year model the outboard is. I do know that Mercury only made...
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