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  1. #1
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    300 XS eating coils

    whats up with this motor, going on the 5th one now... it's almost like you need to carry a spare.. Any suggestions
    Variety of stuff

  2. #2
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    I would carry a spare !! Long swim home sometimes !
    " The Fleet of Old Boats "

    '73 -14' Orlando Clipper Skiff -Yamaha 25
    93- 18 ' Renegade Nomad Flats boat -Merc 150
    '94 - 21 ' Allison XB - 2003 -Merc 260
    '97 - 19 ' STV Euro - Merc - 260
    '99 Benninton 2375 TOONER - V-6- 2 liter 150 Mariner
    2001 Grady White 263 - Twin Yamaha 250 OX 66

  3. #3
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    Anyone else ??? This sounds like it could get expensive.

  4. #4
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    Carry a spare coil, compressor, and oil tank sensor and you should be able to make it home. Injectors are optional but only if you have a Seatow policy.
    Some info:
    http://www.thehulltruth.com/boating-...-xs-optis.html

    I know the guy with the quad Fountain carries spares now.
    Last edited by Mr. Demeanor; 09-30-2010 at 10:42 AM.
    13' Biel tunnel AKA "Flight Risk"
    13" Modified Yamaha V4 - 101 mph

    21' Paramount
    Mercury 300 Promax

  5. #5
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    Marty at Diamond hooked me up with up a spare, good thing is will get on plane down one cylinder.top rpm drops to about 800 less. did some checking and it seems to be the original ones that fail,5 mins to change..5/16 socket and it's done. I hope anyway ...
    Variety of stuff

  6. #6
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    Quote Originally Posted by euro scott View Post
    Marty at Diamond hooked me up with up a spare, good thing is will get on plane down one cylinder.top rpm drops to about 800 less. did some checking and it seems to be the original ones that fail,5 mins to change..5/16 socket and it's done. I hope anyway ...
    Call Mercury tech support and tell them what is going on. They will send you out a complete set of new coils. I ahd the same issue with my 250xs's. They shipped me 12 coils free of charge. They might also want you to switch out the coil harness.

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