One cylinder, slipped prop, clutch dog

[jitterbug127]

My outboard did this this a few time today where it suddenly got weak. Motor sounded a little different and seemed to underperform as well on the top end compared to what I’m used to. You can see from video I think it cut to one cylinder, but I wanted a second and third opinion. Other ideas off top of my head clutch dog starting to slip (I didn’t notice any jerking) or spinning prop but last prop I spun wasn’t intermittent it just wouldn’t work at high speed.

 

[jitterbug127]

I had a puff of white smoke come out of exhaust like motor was over heating for like 3 seconds. I killed it and gave it a few minutes. Head never felt overly hot. No signs of over heating. Fired back up to limp back to the dock. She ran good so I have it more throttle. No more smoke. I’m sure it’s related just not sure how.

 

[saltchuckmatt]

My guess, bad connection or one coil shutting down.

 

[jimmbo]

Can the Ignition System deliver a Spark that can consistently jump a 5/16" gap? What condition are the Coils? Are the Points Clean, and set correctly, and aren't binding?

 

[jitterbug127]

Up until yesterday when I had the boat out the answer would’ve been yes. I’ve fished it all season. I’ll look at magneto and report back there. Glad my instincts were right to check it first.

 

[jitterbug127]

Spark jumped a 5/16 gap just fine. Strong blue spark in both cylinders. Coils were installed new earlier this year OMC black ones. Points had a little bit of pitting on them. I cleaned them and reset them. I'll try this and report back!

Thanks!