catfighter
Petty Officer 1st Class
- Joined
- Aug 11, 2009
- Messages
- 263
Hello - sorry I haven't posted in a while but that's just cuz I haven't had any problems! Hopefully you guys can help me.
So my 1983 Johnson 2-stroke 15hp motor was running fine for years. then I noticed a high-pitched noise (like a VW beetle muffler, almost) coming from the motor but only when going forward and only with the throttle engaged.
I thought it was all in my head (as I exhibited it to other people and they didn't seem to notice anything wrong, not that they were any smarter than I . . .).
Then the motor started missing, then it slowed down and i could hear this ugly screeching sound (like a slipping belt, but it doesn't have a belt) coming from the motor. I put it in neutral and it stopped; I haven't tried to start it again.
here's some things I do know about it:
- The fuel mixture is 48:1 (or 16oz bottle of marine oil to 6 gallons of 91 octane fuel).
- I changed the oil in the propeller last year but I didn't this year (I think that might be the problem!!)
- The water from the stream (I call it the "pee stream" hehe, the little place where the cooling water comes out of the motor) was warm but not hot.
- the high-pitched noise sounded similar to a VW beetle exhaust, high and tinny, it otherwise sounded normal.
- it wasn't running all that great. Normally I could go 15mph with 2 ppl in the boat but it was running around 5mph. I was stuck far, far away from my car w/ no one around so I had to run it . . .
- I did not have the motor tilted; w/ 2 people it runs fine if it's almost perpendicular to the transom (and it still planes, yes).
Thanks in advance for the help; hopefully i didn't just destroy the outboard cuz it's been a great motor these past 3 seasons. . . .
So my 1983 Johnson 2-stroke 15hp motor was running fine for years. then I noticed a high-pitched noise (like a VW beetle muffler, almost) coming from the motor but only when going forward and only with the throttle engaged.
I thought it was all in my head (as I exhibited it to other people and they didn't seem to notice anything wrong, not that they were any smarter than I . . .).
Then the motor started missing, then it slowed down and i could hear this ugly screeching sound (like a slipping belt, but it doesn't have a belt) coming from the motor. I put it in neutral and it stopped; I haven't tried to start it again.
here's some things I do know about it:
- The fuel mixture is 48:1 (or 16oz bottle of marine oil to 6 gallons of 91 octane fuel).
- I changed the oil in the propeller last year but I didn't this year (I think that might be the problem!!)
- The water from the stream (I call it the "pee stream" hehe, the little place where the cooling water comes out of the motor) was warm but not hot.
- the high-pitched noise sounded similar to a VW beetle exhaust, high and tinny, it otherwise sounded normal.
- it wasn't running all that great. Normally I could go 15mph with 2 ppl in the boat but it was running around 5mph. I was stuck far, far away from my car w/ no one around so I had to run it . . .
- I did not have the motor tilted; w/ 2 people it runs fine if it's almost perpendicular to the transom (and it still planes, yes).
Thanks in advance for the help; hopefully i didn't just destroy the outboard cuz it's been a great motor these past 3 seasons. . . .