Search results

  1. S

    Erratic tach, misfire.

    Update. Hoping my issue was solved after replacing both the Spark and ignition control modules. Has ran great since.
  2. S

    Erratic tach, misfire.

    Update 2. Hooked tach backup while having new ignition coil installed. 90 minutes into ride, misfires again. Up to that point perfect as always, after misfire will start and idle perfect all day, then Once it reaches 2000 rpm starts misfiring.
  3. S

    Erratic tach, misfire.

    Update. After 12 hours of running without tach all was good, which consisted of 30-90 minute rides. Go out today, starts misfiring after 2 hours of run time?
  4. S

    Erratic tach, misfire.

    Thank you!
  5. S

    Erratic tach, misfire.

    Boat ran good again for 2 hours other than hard start rough idle one time. 3 3/4’ diameter
  6. S

    Erratic tach, misfire.

    Hope it’s that simple. Any leads on where to get an OEM tach?
  7. S

    Erratic tach, misfire.

    Disconnected at tach
  8. S

    Erratic tach, misfire.

    Have ran it twice now with tach unhooked for at least 90 minutes. No misfires, runs smooth. Only odd thing is a couple of brief instances where boat doesn’t slow but there is a “dragging” sensation. Engine changes sound briefly but doesn’t slow? Sorry, that’s the only way I can describe it.
  9. S

    Erratic tach, misfire.

    Thank you for the responses. Putting Boat in today without tach hooked up. Hope it’s that simple.!
  10. S

    Erratic tach, misfire.

    Thanks Scott , will check into that!
  11. S

    Erratic tach, misfire.

    Hello, I have a ‘99 Searay signature 230, 5.7 merc., 400 hours. Recently tach jumped all over and engine misfiring. Tach erratic with no change in engine as well.Only does this after 1 1/2 -2 hours running time. Idles perfect. Runs perfect for short excursions. This spring had I new distributor...
Top