OK, last year this motor started right up and ran well in the driveway. It started right away and ran smooth. Since that time I had removed the lower unit, and long story short, I took it to a Marine repair place. He reinstalled the lower unit and changed the plugs, but he asked "has this motor been sitting for a while"? "You need to take this out and run it, the carbs need some fuel cleaner run thru them, once that is done, it will be fine. He also commented that he had a hard time getting it started which was odd, although it had sat over the winter after I had fogged the cylinders and had run some StaBil thru it.
Once I got it back, I had one heck of a time getting it to start. I need to put the fast idle 1/2 or better to get it to idle. With the fast idle at 100%, I could tell that I wasn't getting enough RPMs. I discovered that a plug wire must have been broken when the plugs were changed, so I changed them all. I ohmed from the plug wire to ground and from the primary on the coil, they were all equal. I also replaced the primer bulb, the fuel connector, and the fuel line... and yes, the vent is open.
The motor runs smooth, its almost as if I adjusted the idle up, it would be OK. If I turn the fast idle down to normal, it stalls. Like this, I would never be able to turn off the fast idle and get it in gear. I just don't understand, why I should have to adjust anything, what has changed? With the motor running, I pulled the top 3 plugs one at a time, each had spark but maybe not equal intensity, hard to tell.
Here are the things that have changed since last year:
* plugs are replaced with NGK centerfires, used to have AC regular electrodes
* Added some SeaFoam to the fuel
* at one point with the key off, I accidently touched the wire to the battery terminal with it connected backwards. And I mean just for a second.
Questions:
* could adding centerfire plugs cause this?
* could it be because of the 2 oz/gallon of SeaFoam?
Any ideas?
Once I got it back, I had one heck of a time getting it to start. I need to put the fast idle 1/2 or better to get it to idle. With the fast idle at 100%, I could tell that I wasn't getting enough RPMs. I discovered that a plug wire must have been broken when the plugs were changed, so I changed them all. I ohmed from the plug wire to ground and from the primary on the coil, they were all equal. I also replaced the primer bulb, the fuel connector, and the fuel line... and yes, the vent is open.
The motor runs smooth, its almost as if I adjusted the idle up, it would be OK. If I turn the fast idle down to normal, it stalls. Like this, I would never be able to turn off the fast idle and get it in gear. I just don't understand, why I should have to adjust anything, what has changed? With the motor running, I pulled the top 3 plugs one at a time, each had spark but maybe not equal intensity, hard to tell.
Here are the things that have changed since last year:
* plugs are replaced with NGK centerfires, used to have AC regular electrodes
* Added some SeaFoam to the fuel
* at one point with the key off, I accidently touched the wire to the battery terminal with it connected backwards. And I mean just for a second.
Questions:
* could adding centerfire plugs cause this?
* could it be because of the 2 oz/gallon of SeaFoam?
Any ideas?
