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  1. flyingscott

    1990 90HP Pontoon, 4300 RPM at WOT, Do I need a new prop?

    why do you think a 150 prop will fit that motor? Stop making this so hard on yourself. you don't need to buy a Mercury or any of the other brand name props. Solas props are relatively cheap and are pretty good props. You are not running a 100 MPH boat here. Call Michigan wheel or Solas to get...
  2. flyingscott

    1984 force 125 low compression question?

    That should be the water jacket. When its running that will fill with water
  3. flyingscott

    1984 force 125 low compression question?

    Explain to us how the fuel pump will cause low compression please?
  4. flyingscott

    1990 90HP Pontoon, 4300 RPM at WOT, Do I need a new prop?

    Almost none of that statement has any basis in fact. Except the stainless is heavier than aluminum that is true. This just proves how little is known about props. #1 stainless is better performing pretty much across the board #2 dropping pitch does not necessarily mean losing speed because the...
  5. flyingscott

    1988 100hp mercury spark plugs

    l76v champion should work. https://www.marineengine.com/parts/ngk/mercury.html
  6. flyingscott

    Are plastic props junk?

    That Yamaha prop is probably metric. The force shaft will be standard
  7. flyingscott

    1986 Mercury 25XD

    The manual would have been cheaper. The proper tests would have saved you money. But you keep loading that parts Cannon.
  8. flyingscott

    1969 6r69m 6hp Starts, idles, revs real high, then dies

    Maybe start your own thread and not hi jack a 6 yr old one.
  9. flyingscott

    1986 Mercury 25XD

    How are you testing spark? It should jump a 7/16 air gap easily. Get the manual and start testing. The parts cannon gets expensive. I would guess your problem is in the switch box.
  10. flyingscott

    1988 100hp mercury spark plugs

    That is absolutely a diaphragm pump. Clearly shows them in the pic 5 and 2. If it gets its pulse from block pull that hose off and see if it's full of fuel. It should not be
  11. flyingscott

    Are plastic props junk?

    Don't know
  12. flyingscott

    1988 100hp mercury spark plugs

    You also need to check the fuel pump diaphragm.
  13. flyingscott

    Are plastic props junk?

    I would start looking for a spare.
  14. flyingscott

    System Check Wiring Harness Compatibility

    You will need an adaptor. I believe the 94 is a red plug and your 97 has automotive style plugs. CDI makes the adaptor.
  15. flyingscott

    Rebuilt Carburetor… Still No Idle!

    According to who?
  16. flyingscott

    1988 100hp mercury spark plugs

    They are part of the carb. This is what they look like and you should buy a carb kit and rebuild/clean the carb. Buy a good kit...
  17. flyingscott

    Are plastic props junk?

    Chances of finding a prop for that motor is going to be some slim. Treat that one like gold replacements will be hard to find.
  18. flyingscott

    1986 Mercury 25XD

    What is your compression? Spark jump a 1/2" gap? Carb kit is 1395-9761 1 manual should be available call a dealer.
  19. flyingscott

    1988 100hp mercury spark plugs

    A leaking accelerator pump can
  20. flyingscott

    1988 100hp mercury spark plugs

    No it doesnt. There are accelerator pumps on the bottom 2 carbs that can leak.
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