I'm trying to troubleshoot a new issue with this motor.
Brief history of the motor. It was sitting up for 2 or 3 years when I got it. All new fuel lines, rebuilt fuel pump, carburetor, new gas tank, new primer bulb, new plugs, new plug wires and new water impeller.
The motor started up and ran fine but had a high idle that I started to chase and couldn't get and ended up getting the timing out whack. Brought it to an outboard mechanic he got it tuned in and running. First trip out on it from the mechanic and it ran fine but there was this odd miss occurring at the 5000 - 5200 rpm mark. I shrugged it off as maybe some rash in the carb. Checked the bowl and it was clean. The problem continued which is what prompted me to change out the plug wires. This helped some but not entirely. As of the last time I took it out it was slow to take off and when I got on plane I was still having the misses. I've slowed it down to 4000 rpms and 3000 rpms and it made no difference, still had the miss.
The miss is a drop in 100 rpms +/- every 45 - 60 seconds.
When I explained the issue to my mechanic he suggested a change in plugs from perma-gap to traditional plugs. No change.
I started testing the ohm readings on my electronics and think I may have found the issue but wanted a second opinion.
The startor low speed (blue and blue-white wires) should read between 3500 and 3650 ohms. On two multi-meters I had a reading of 4100 ohms. On the high speed (red and red-white wires) it should read between 75 and 90 ohms. It had a reading between 100 and 105 ohms. I ran the motor on the cups to bring it up to operating temperature and tested the stator again. This time the low side read 6500 ohms. The high side read between 100 and 105.
I'm going to replace the ignition coils sine I dropped one and busted one of the magnets. But given the above information is my problem most likely stator related?
Thanks for any direction.
Brief history of the motor. It was sitting up for 2 or 3 years when I got it. All new fuel lines, rebuilt fuel pump, carburetor, new gas tank, new primer bulb, new plugs, new plug wires and new water impeller.
The motor started up and ran fine but had a high idle that I started to chase and couldn't get and ended up getting the timing out whack. Brought it to an outboard mechanic he got it tuned in and running. First trip out on it from the mechanic and it ran fine but there was this odd miss occurring at the 5000 - 5200 rpm mark. I shrugged it off as maybe some rash in the carb. Checked the bowl and it was clean. The problem continued which is what prompted me to change out the plug wires. This helped some but not entirely. As of the last time I took it out it was slow to take off and when I got on plane I was still having the misses. I've slowed it down to 4000 rpms and 3000 rpms and it made no difference, still had the miss.
The miss is a drop in 100 rpms +/- every 45 - 60 seconds.
When I explained the issue to my mechanic he suggested a change in plugs from perma-gap to traditional plugs. No change.
I started testing the ohm readings on my electronics and think I may have found the issue but wanted a second opinion.
The startor low speed (blue and blue-white wires) should read between 3500 and 3650 ohms. On two multi-meters I had a reading of 4100 ohms. On the high speed (red and red-white wires) it should read between 75 and 90 ohms. It had a reading between 100 and 105 ohms. I ran the motor on the cups to bring it up to operating temperature and tested the stator again. This time the low side read 6500 ohms. The high side read between 100 and 105.
I'm going to replace the ignition coils sine I dropped one and busted one of the magnets. But given the above information is my problem most likely stator related?
Thanks for any direction.
