- Joined
- Apr 22, 2016
- Messages
- 1,237
Hi all, I have a 1991 Evinrude 9.9 two stroke, new to me but is in almost brand new condition. I have been through the carb (pulled apart the carb just to look) and the engine runs PERFECT. My problem is @ 50:1 the engine smokes a lot at idle, which is normal I understand. Once underway and for the few minutes after WOT brought back down to idle it does not smoke. My issue is that once it cools down and idles it begins to smoke and thats a problem because I troll a lot. This outboard is on a jon boat so the motor is practically right next to me when Im driving. So, my question is, I want to run an oil mixture of say 70:1 or 80:1 to mitigate the smoke while trolling, what oil will provide the best protection at a higher fuel to oil raito? Before anyone gets into the mixture screw conversation I will say I have spent plenty of time adjusting it and it is set PERFECTLY and runs excellent. Current oil is Penns tcw-3 semi synthetic @ 50:1. Again, minimal smoke but once the motor cools for a few minutes it begins to smoke at my 2mph trolling speed.