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Thread: '03 Mercury 90HP 4 stroke burnt plastic smell,

  1. #1
    Join Date
    Nov 2008
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    Default '03 Mercury 90HP 4 stroke burnt plastic smell,


    I went to Cane Creek this morning, caught a few catfish 1 crappie and 1 large mouth. About 10 it was getting hot so I started the big motor and let it idle while I reeled up the rods, then it just quit. I thought Ok I ran out of gas. The I looked over the back an had smoke coming out of the engine cover.
    Once I got it on the trailer I found the tilt doesn't work, no sign of burnt wires that I can se after removing the covers.
    Next step will be to see if I can get the tilt to work( fuse to engine didn't blow)
    Any Ideas?

  2. #2
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    you may have a loose connection somewhere.

  3. #3
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    I found the problem the rectifier / regulator is burnt to a crisp

  4. #4
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    Bought a regulator on line new in the box for $20.00 on 8/16 delivered 8/20 regular shipping the wanted $55 for 2nd day, installed today boat runs no smoke. Local dealer best price was $600. I figured I'd try the cheap one, we'll see how long it lasts
    The part was a lot bigger than original
    I had to mount it using only one bolt. They don't make these motors for people with old fingers.
    If you need electrical parts try ATV, Motorcycle, Snowmobile, Marine, Small Engine, PWC parts online I don't make anything but so far the parts and service have been great.
    Likes crappiemax LIKED above post

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