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  1. jimmbo

    1998 9.9 Mercury 2 stroke idling issue

    Unless you have Kal-El's X-Ray Vision, you aren't going to be able to see a clogged or dirty Fuel Circuit, until you take the Carb apart, that includes any Covers(look like small frost Plugs)
  2. jimmbo

    1998 9.9 Mercury 2 stroke idling issue

    I do not know which Screw you are referring to as the Idle Screw. Turning the wrong one can throw the Sync between the Carb and Ignition Advance out the Window. As for the Idle mixture Screw, 1 1/2 Turns out from "lightly seated" is the usual Initial setting. It will be overly Rich, but will...
  3. jimmbo

    New Stuff on Vehicles likes/dislikes

    Amazon offers a Wiring Harness for GM that plugs into the Hood Switch that permanently disables that Horrible Feature, no button Pressing required. My car didn't have disable button, but that Harness fixed that Problem, cost was about $15(us). Security and Remote Start are not affected by it either.
  4. jimmbo

    New Stuff on Vehicles likes/dislikes

    The Electric E Brake can be set up to hold the Car from rolling back on a hill when you take your foot off the Service Brake and before you put it on the Gas Pedal. It is a bit of a pain when you change Brake Pads, cause the Screwjack, used has to be retracted before you can press the Caliper...
  5. jimmbo

    New study on tow boat environmental impact

    Just a simple Nationwide Ban that they can't be making a Wake within 8 miles of a Shore would pretty much solve the Problem At a Lake not too far from my City, there were lots of Smiling Faces, when several Wakeboard Boats had been visited by a Hole Saw
  6. jimmbo

    1998 9.9 Mercury 2 stroke idling issue

    The Gap on the Plugs is in the Neighbourhood of 0.035" I asked can the Spark jump a 3/8" Gap, much larger, cause a Spark at 0.035" at Atmospheric Pressure really means nothing as little to no Stress is placed on the Ignition System. So the Motor will only Start if it is at Full Throttle? Are...
  7. jimmbo

    93 evinrude 25HPOver Heating

    So it is Pumping water at 1/2 Throttle(in tank, in neutral) and quits when you slow down? Is that 15 minutes total run time, or after it slows down? Can you put your hand on the Top of the motor, or Cylinder Head? Does the Paint on the Head/top of Block, look burnt? Has the Head ever been off...
  8. jimmbo

    More speed from 9.9 merc

    Perhaps a 90+ hp
  9. jimmbo

    Evinrude 75hp 1976, difficulties accelerating

    Idle Timing is Dynamic, as it is what determines the Idle Speed. The Carbs are fully Closed for a lot of the Throttle Movement, just cracking open at the Pickup Spec . Once the Timing is Fully Advanced do the Throttle Valves really start to open
  10. jimmbo

    I Got Me a Mercury !!!

    Try running it Briefly, on a much Oil Rich Mixture. If it Idles Better, I would be looking at the Upper Crankshaft Seal. Also check for any Oil Recirculation Line from the Crankcase up to the Upper Bearing Area. or Pull the Flywheel and look for Oil at the Seal Area
  11. jimmbo

    93 evinrude 25HPOver Heating

    Are you running the Motor on Muffs, in a Tank, or on the Boat in the water? If on Muffs, you would be able to see all the Places that water will exit the Motor, not just the Teletale(I really don't put much Faith in them, as they just indicate water makes it to the Powerhead, and little Else)...
  12. jimmbo

    1998 9.9 Mercury 2 stroke idling issue

    Does it die after 3 minutes at all speeds? Spraying Carb Cleaner into a Carb does Eff all, except clean the Throat and Throttle Valve. If the Motor can't Idle, it is likely the Idle Circuit is Dirty, and a Teardown and proper Cleaning required Other Things... Is the Spark strong enough at both...
  13. jimmbo

    Prop shaft broken at Cotter pin hole

    Just replace the Prop Shaft
  14. jimmbo

    Trim and tilt issue - lower rams going in before motor lowers

    The System is behaving like you have have engaged the Trailering lock, which is why Salty(no disrespect intended), suggested loosening the Tilt Tube. Have you tried holding the Switch on, after the Outboard is all the Way Up, and all the way Down? If not, do it a few Times, and then recheck the...
  15. jimmbo

    new propeller installation and test resoult

    You Prop an Engine so it run at or Near the Top of the WOT Range. If you chose a prop because you like a certain Speed at a certain Rpm, and the Engine isn't getting to the WOT Range, you will be Torturing that Engine. But, hey, it is your Engine to wreck, and your Money to repair/replace it
  16. jimmbo

    new propeller installation and test resoult

    First of all, what is the WOT Rpm Range for that Motor?
  17. jimmbo

    V/P Duo Prop. Would going from F5 to F6....

    That is NOT how you choose a Propeller for a Boat.
  18. jimmbo

    Need different prop for pulling

    I too learned to ski behind a 2 Stroke 40hp, even did some deep water starts on a Slalom Ski behind it. I too have also noticed that with the 4 Strokes, 150hp on a 15 ft boat, can barely pull a skier on 2 skis.
  19. jimmbo

    Need different prop for pulling

    The High 5 is actually smaller in Diameter than the 3 and 4 Blade Props Mercury sells, and the Blades are a lot smaller.
  20. jimmbo

    New phone

    A couple of Days ago, it was about 32-33(90-93F) and I put my phone on the Dash, 40 minutes later it was too hot to hold. I, for the first time ever saw the Red Thermometer on the screen. I took it out of the OtterBox, and held it against the AC outlet. Several minutes later It was working...
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