BigNiner19
Contributing Member
Twin 2004 Yamaha F150 4 Strokes with 1600 hours. Dont much of the history except for the last 100 hours since I've got them. But they run really good. They start right up, have good compression, idle nice, great power.
However, I've noticed the starboard motor has a bit more of a "vibration" to it than the port side engine. When you touch both cowlings while in nuetral (not in gear) or even in idle speed (in gear) you can feel that the starboard motor vibrates more than the port.
So today I ran a decarb on a seperate tank of gas with seafoam just because I figured it couldnt hurt. So I ran the engine without the cowling, and I heard a noise that I've never heard before when the cowling is on.
At 1800-1900 RPMs ONLY a clacking/chirping sound occurs and immediately goes away if you bump rpms up to 2000 or drop rpms to 1700rpms. Weirdest thing.
I've heard these motors have had problems with balancers, and I dont know if these balancers are bad or not. Please watch the videos and feel free to offer up any advice.
Hopefully this is a "no two things are exactly alike" deal and its all good. But if something is wrong, I want to fix it.
Thanks!
http://vidmg.photobucket.com/albums...E-E27A-496E-880E-2E0978102E3D_zpsjfu2ooab.mp4
http://vidmg.photobucket.com/albums/v410/BigNiner19/Video_zps9alntc9o.mp4
However, I've noticed the starboard motor has a bit more of a "vibration" to it than the port side engine. When you touch both cowlings while in nuetral (not in gear) or even in idle speed (in gear) you can feel that the starboard motor vibrates more than the port.
So today I ran a decarb on a seperate tank of gas with seafoam just because I figured it couldnt hurt. So I ran the engine without the cowling, and I heard a noise that I've never heard before when the cowling is on.
At 1800-1900 RPMs ONLY a clacking/chirping sound occurs and immediately goes away if you bump rpms up to 2000 or drop rpms to 1700rpms. Weirdest thing.
I've heard these motors have had problems with balancers, and I dont know if these balancers are bad or not. Please watch the videos and feel free to offer up any advice.
Hopefully this is a "no two things are exactly alike" deal and its all good. But if something is wrong, I want to fix it.
Thanks!
http://vidmg.photobucket.com/albums...E-E27A-496E-880E-2E0978102E3D_zpsjfu2ooab.mp4
http://vidmg.photobucket.com/albums/v410/BigNiner19/Video_zps9alntc9o.mp4