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    Water in spark plugs Yamaha 1991 225TXRP V6

    1991 Yamaha twins 225TXRP V6 I'm new to boating/first boat. I decided to check plugs on port side engine today, and found the right sdie, mid and bottom cylinder plugs fouled with what seems like water and oil mixed Background: Bought them about a month ago, did fine on sea trial. Tried them...
  2. M

    If water comes out of propeller it means thermostat opened and water pump working?

    Could anyone share how you can get water through the propeller without the thermostat opening?
  3. M

    What is this salt on my outboard block and spark plug holes?

    Warm engine compression test today vs Cold engine test 5 months ago Piston # PSI PSI 1 119 115 2 121 120 3...
  4. M

    If water comes out of propeller it means thermostat opened and water pump working?

    Noob question. Just wanting to understand how it works. If I see water coming out of the propeller when outboard is on, it means the thermostat opened and the water pump pushed the water through the cooling system? Thanks Engine 1991 2 stroke V6 225 Yamaha
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    What is this salt on my outboard block and spark plug holes?

    Thanks. I took apart the twin engine. There was no sand in the impeller casing or anywhere close to the impeller, and I didn't change the impeller on that one because it looked immaculate. I am concerned I didn't do the same inspection for this engine on the pic though. They are just so heavy to...
  6. M

    What is this salt on my outboard block and spark plug holes?

    Hey. Thanks. I think I first noticed the overheat sign on the engine one time after getting somewhat stuck in a sandbar. Right after this incident, after trying to get out and return to the marina that engine turned off and I arrived at the dock with its twin. I flushed them on the spot when I...
  7. M

    What is this salt on my outboard block and spark plug holes?

    I just found this salt in the marked areas of the outboard and spark plug holes as shown on the pic Can anyone share what this means? Yamaha outboard 2 stroke V6 225 hp
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