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Thread: 280 merc

  1. #1
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    280 merc

    i have 280 mercury and every time it climbs to 3000-4000 rpm it shuts down completely wat do u think is the cause?

  2. #2
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    Sounds like sensor or ecu " somebody will chime in and help

    Mike
    Allison Xb2002

  3. #3
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    I had a similar problem in the past drove me nuts. Put in on the dyno and found the air gap was open too much on the sensor under the fly wheel. Pretty sure I set it to 20 or 25 thousands and fixed the problem. Good luck!!

    2000 19' Extreme 280 merc
    1996 19' STV Mod VP 280 12" speedmaster IV
    1976 16' allison 115 merc

  4. #4
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    Nick, your really never on vacation are you? lol
    "Just a monkey pushin a stick"

    www.missgeicoracing.com

  5. #5
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    Quote Originally Posted by Scottb View Post
    Nick, your really never on vacation are you? lol
    Can't help myself Scotty. Got the boat loaded up and we are going spear fishing. Maybe alittle deep dropping. Little overcast here waiting for clouds to burn off.

    2000 19' Extreme 280 merc
    1996 19' STV Mod VP 280 12" speedmaster IV
    1976 16' allison 115 merc

  6. #6
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    Air gap on trigger needs to be set at .035"

    jay
    Jay @ JSRE


  7. #7
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    thank a millie for ur help guys.....Jay i set my trigger gap to .035 now im off and runing thanks again realy apresheate it.

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