nrf414
Chief Petty Officer
- Joined
- Feb 16, 2008
- Messages
- 573
Mercruiser 3.0 Success Story
Hey everyone as I read over the forums, I see many problems questions and troubles. Well I wanted to post a short success story with my 3.0 Mercruiser.
I am a lurker at best, reading when my curiosity strikes me. Well recently I bought a new boat that is my first I/O. I bought it approximately 3 weeks ago and since then I have read, read, and read some more. With all the reading and researching from other peoples problems and questions I was able to troubleshoot my situation successfully.
When I bought the boat at first it seemed to turn over very slowly and would not idle when it would fire up. So I checked compression (150 on all cylinders), checked the plugs for spark, cleaned the flame arrestor and added some fuel conditioner to the fuel tank. I still could not get it to fire up and stay running. I tried carb / choke cleaner. Still I could not get this thing to work. When all the simple stuff didn?t seem to fix it I knew there had to be something with the carb that could be tested next.
Reading the manual I found the idle speed adjustment screw next to the linkage on the port side of the motor. I turned it all the way in, pumped the throttle 3 times and staged at 1/3 in. With the turn of a key the motor stayed stable at high idle but STABLE! So I tuned the idle down to about 650 -700 RPM idle and now it seems to be running strong.
All too often we get caught up in the little things that can really turn us off. I thought long and hard about giving up and taking it to a stealer I mean a dealership or service center. But through perseverance and the right amount of patience I was able to succeed. I hope that we all can reap the benefits of the readily available resources and see our projects launched.
Hey everyone as I read over the forums, I see many problems questions and troubles. Well I wanted to post a short success story with my 3.0 Mercruiser.
I am a lurker at best, reading when my curiosity strikes me. Well recently I bought a new boat that is my first I/O. I bought it approximately 3 weeks ago and since then I have read, read, and read some more. With all the reading and researching from other peoples problems and questions I was able to troubleshoot my situation successfully.
When I bought the boat at first it seemed to turn over very slowly and would not idle when it would fire up. So I checked compression (150 on all cylinders), checked the plugs for spark, cleaned the flame arrestor and added some fuel conditioner to the fuel tank. I still could not get it to fire up and stay running. I tried carb / choke cleaner. Still I could not get this thing to work. When all the simple stuff didn?t seem to fix it I knew there had to be something with the carb that could be tested next.
Reading the manual I found the idle speed adjustment screw next to the linkage on the port side of the motor. I turned it all the way in, pumped the throttle 3 times and staged at 1/3 in. With the turn of a key the motor stayed stable at high idle but STABLE! So I tuned the idle down to about 650 -700 RPM idle and now it seems to be running strong.
All too often we get caught up in the little things that can really turn us off. I thought long and hard about giving up and taking it to a stealer I mean a dealership or service center. But through perseverance and the right amount of patience I was able to succeed. I hope that we all can reap the benefits of the readily available resources and see our projects launched.