1968 Rude 55hp stalls after high speed run

[Thunderhawk]

Hey everyone, my 55hp outboard has been stalling after high speed runs for a couple seasons now, it won't restart unless it sits for 3-5 mins, at first I thought it was a fuel issue, low speed needles are set to 5/8 turn out. I tried leaning and richening the low speed to no avail, now I am thinking ignition maybe powerpak overheating? Any ideas or suggestions would be great.

 

[kfa4303]

Re: 1968 Rude 55hp stalls after high speed run

HI Thunderhawk. The symptoms you're describing are classic signs which suggest that something in the ignition is at fault. If/when electronic components get too hot they can/will fail and remain inoperable until they cool down again. I would pull the flywheel and give everything a thorough inspection. You may have a cracked or broken coils, which is not at all uncommon on these old motors. Not to worry, they're quick, cheap and easy to replace. Give a look and let us know what you find.

 

[Tim Frank]

Re: 1968 Rude 55hp stalls after high speed run

HI Thunderhawk. The symptoms you're describing are classic signs which suggest that something in the ignition is at fault. If/when electronic components get too hot they can/will fail and remain inoperable until they cool down again. I would pull the flywheel and give everything a thorough inspection. You may have a cracked or broken coils, which is not at all uncommon on these old motors. Not to worry, they're quick, cheap and easy to replace. Give a look and let us know what you find.

The coils are not under the flywheel, and there is nothing cheap when replacing ignition components on that motor....

Try a can of electronic "freeze spray" on the power pack. That would pinpoint an overheat problem with that.
If that does not help, you need a proper troubleshooting checklist for that motor.
I had the Johnson version of that motor....a manual is critical at this point unless someone weighs in with the detailed instructions.

Otherwise, you'll just be throwing $$$$ at it.