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  1. Scott Danforth

    No spark, 91 536

    Service the points File them Rough gap them Set dwell with a meter Set timing
  2. Scott Danforth

    Mercruiser 3.0 electrical problem?

    Your alternator may not be charging Your battery could be toast Get alternator tested get battery tested
  3. Scott Danforth

    87 PCM Chevy inboard temp / water pump issue

    Replace your raw water impeller or the whole pump It's not your thermostat Make sure you find all the pieces of your old impeller
  4. Scott Danforth

    End of Season Maintenance

    I wouldn't Engine oils develope acids from the combustion process You could have a gear box seal leak Your bellows could be leaking There is a reason that the maintenance cycles are 100 hours or annually
  5. Scott Danforth

    Plastic under gas tank

    My guess it's left over from them making the boat because the line worker was too lazy to dispose of it. Have found coke cans, bags, etc when uncapping boats
  6. Scott Danforth

    Chaparral Engine Compartment Insulation

    One of the marine engine bay insulation companies is soundown.com
  7. Scott Danforth

    Crankshaft sound?

    Kind of. It's under the motor at the forward side of the flywheel. Most likely easiest by pulling the motor
  8. Scott Danforth

    WOT for 20min and engine bogs.

    First thought is check for fuel and spark If you don't have fuel spraying when you give the throttle, it's the fuel system and most likely a plugged vent If you have fuel, but not spark. Go thru the Thunderbolt trouble shooting guide. Most likely the ignition trigger assembly if it's the old...
  9. Scott Danforth

    Guys, help with a weird fishbox on my new (to me) Robalo

    My guess there could be a check-valve installed backwards Coffin boxes used as an ice chest have a drain line that allows waste water out Floor boxes are generally storage with the same type of in-line scupper check
  10. Scott Danforth

    Oil Pressure Switch Necessary with the Sniper EFI?

    All electric fuel pumps in a marine environment need to have an alternate switch that shuts down the pump. One is the primary ignition, the second is either from an oil pressure switch, alternator output, or ECM command You want to make sure the pump is not running unless the motor is running...
  11. Scott Danforth

    5.7L MerCruiser Bravo III under water...repairable?

    First, welcome aboard Motor is junk, wiring is junk, blowers junk, steering cable is junk, control cables are junk, drive would need to be pulled apart. Water has now gotten into areas that it will never get out of Leak being transom, assume transom/stringers/deck are rotten Estimate $5000...
  12. Scott Danforth

    Exterior vs interior plywood

    Because the $2cost savings per sheet isn't worth it Because interior grade wood is has less plys
  13. Scott Danforth

    Suggestions about boat not getting on plane and prop protection

    They help the manufacturer make money and they help empty your wallet
  14. Scott Danforth

    Weight Reduction

    Your opinion. Good luck
  15. Scott Danforth

    4.3L Mercruiser Milkshake

    when a boat motor stops getting cooling water from the $15 impeller that someone didnt change, the exhaust temp goes from 200 F to 1100F in a matter of seconds the milkshake could be from that severe overheat regarding your block/heads. drain the cooling system and pressure test the cooling...
  16. Scott Danforth

    Cracked mercruiser 260

    if your 1986 boat has a 1986 motor (center mount valve covers, 12 manifold mounting holes and 1-piece RMS), then it is the same as your 1990 motor if your 1986 boat has a 1985 motor (2-piece RMS), then you will need a flywheel to go along with your 1990 motor the block crack is from poor...
  17. Scott Danforth

    Water leak

    Drain plug leaks Crack in hull Rain Swamp the boat Big wave Anchor from the stern Many ways for water to get in
  18. Scott Danforth

    Boat slowly stutters and eventually stalls, can start it again after 5-20 mins

    Check if your tank vent is plugged
  19. Scott Danforth

    Attwood mini king bilge pump.

    2 wires is manual only. 3 wires should both manual/auto
  20. Scott Danforth

    Going Bravo Dual Prop on a Yamaha 250 2 Stroke?

    It would be cheaper for you to sell what you have and buy what you want The money and time it would cost to mate a Mercruiser bravo drive to a Yamaha would be more than a complete new boat Not to mention lugging an outboard would kill it
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