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  1. 1

    150 Mercury 2 Stroke WaterPressure Question

    I have a 2000 Mercury 150 2 stroke carb motor that I just had the power head rebuilt. At that time I installed a new water pump along with a new poppet valve. I also installed a water pressure gauge and temp gauge. The first time out I noticed that the water pressure is at around 3psi at idle...
  2. 1

    Question on timing 150 2 stroke

    Trying to set timing on 2.5- 150 2 stroke carb motor. according to manual you should be able to static time out of water with plugs out. I can see no change in the timing when I move the trigger control arm. When I put on hose or in the water and run motor, I can see it change or at least enough...
  3. 1

    Overheating problem?

    I have a 1999 150 2 stroke that I just had the power head rebuilt. This is a carb engine with oil injection removed. I have mixed the oil heavy and run it only a few hours at lower RPMs to try and break it in. Today I put it in the water and ran for a longer time and picked the RPM up to around...
  4. 1

    Temp sensors

    I have a 1999 Mercury 150 2 stroke with carbs. During power head rebuild we lost the temp sensor from the port side head. I remember that it had two wires, one I believe was grounded. The one on starboard side had only one wire. Could some one tell me why a difference and will a one wire sensor...
  5. 1

    2 stroke Timing problem

    I have a 1999 Mercury 2 stroke 150 that I just had the power head re-built. After installing I am having trouble checking the timing. I had a mechanic help with the instatalition. We started the motor and put it in the water. The motor started easy and ran fair but because we had not checked...
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