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    tachometer doesn't work

    Could anyone advise me on this problem , A boat mechanic advised me ,The tack could be at fault , I got the working , But problem persist, Could this be a timing advance issue?
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    tachometer doesn't work

    ok not starting a other thread , This is part of the ongoing problem , I did find some loose connections. tightened them all up ,checked the grounds. problem persist, As I said in last thread , bogs down , hit the trim up or down it give the engine a boost. let off trim it's back to bogging...
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    1993 carb 4.3 Mercruiser ?

    I see ,That makes sense ,I'll go through all the connections and let you know. Thank you
  4. T

    tachometer doesn't work

    It's a 1993 chaparral 4.3 4brl carb. I also found out on a test run that engine runs fine at idle but at about a third throttle it starts to bog down while doing this I adjusted the trim of motor, When i went up or down with trim switch the motor stopped bogging picked up rpm and speed like...
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    1993 carb 4.3 Mercruiser ?

    I will give this a try , Can you explain how that could make the tilt switch, To smooth out the motor and pick up speed. in up or down position .The second I let off switch, Motors right back to no power and sputtering.
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    1993 carb 4.3 Mercruiser ?

    Engine idles fine , But about half throttle it starts to bog down ? The crazy thing is when I use the up or down trim switch ,The engine stops bogging and smooths out ,as soon as I release trim switch it's back to bogging down . What does the trim switch have to do with it ? I'm baffled ,Anyone...
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    tachometer doesn't work

    Thanks I'll use that info and see what I can do.
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    tachometer doesn't work

    with wire is responsible for tach operation
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