97_Manta_Ray_CR
Seaman
- Joined
- Jan 19, 2015
- Messages
- 67
Hello to all that will help me
First off thank you for taking the time to read and give advice
I recently had my mercruiser 3.0 replaced with a newer 3.0 motor cause I spun a bearing in the other one, the newer motor is a 99 mercruiser 3.0 factory adjusted timing and carb (nothing has been adjusted since from the factory) installed in my boat and idel is great about 1000 RPMS and full throttle is fine 4400 RPMs with a 14.5x19 prop....
The issue I am having is at about 1100 to 1200 RPMs the motor vibrates alot and anything passed 1100 to 1200 RPMs or lower the motor runs smooth,,,
Now when I say vibrates I am meaning the engine and the whole boat...
I have adjusted the choke idler,,,
I would prefer not to adjust the carb since it is Factory set
Please help
Thank you again for your help
Chris
First off thank you for taking the time to read and give advice
I recently had my mercruiser 3.0 replaced with a newer 3.0 motor cause I spun a bearing in the other one, the newer motor is a 99 mercruiser 3.0 factory adjusted timing and carb (nothing has been adjusted since from the factory) installed in my boat and idel is great about 1000 RPMS and full throttle is fine 4400 RPMs with a 14.5x19 prop....
The issue I am having is at about 1100 to 1200 RPMs the motor vibrates alot and anything passed 1100 to 1200 RPMs or lower the motor runs smooth,,,
Now when I say vibrates I am meaning the engine and the whole boat...
I have adjusted the choke idler,,,
I would prefer not to adjust the carb since it is Factory set
Please help
Thank you again for your help
Chris