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  1. hkeiner

    Faulty check valves on oil injection system causing smoke?

    I have a 1996 150 HP Mercury OB (serial OG397853). It starts fine when cold, runs well at WOT, and idles well (without smoke) when I slow down to low speed or neutral after running at WOT. However, the motor does not like to start again in neutral when the engine has been turned off for a few...
  2. hkeiner

    Use of silicone sealer when installing lower unit?

    I plan to replace the impeller on my 1996 150 HP Mercury Outboard (Serial OG397853). This will be the first time that I have done it myself. I have read the Mercury Service Manual and pretty much know what to do regarding the removal of the lower unit and replacement of the water pump parts. I...
  3. hkeiner

    How to ground wires when doing compression test?

    How do you properly ground the spark plug wires when doing a compresson test? I am planning to do a compression test for the first time on my 1996 Mercury 150hp 2-stroke outboard. I have read many posts in this forum on compression testing and they mostly agree that it is important to properly...
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