140 Johnson no power/idle

[oceanpotion]

I have a 1988 Johnson 140 the VRO is disconnected. I only use 93 octane in it. Last trip out I would be running at 3rpms and it would sort of bog out or power down a little bit. I could throttle it back up but it would gradually bog out. When I put it back on the trailer I couldnt drive it up the trailer. I usually leave the trailer bunks 1/3 of the way out of the water and power load on to the trailer with no probs. This time the thing would not lift itself onto the trailer. Also when I was lining up to drive onto the trailer I notices I had no idle. I think I may have mixed too much oil in the gas? You guys wanna toss me some ideas. Brand new plugs, maybe I should get the carbs cleaned and make sure all the coils are sending spark?

 

[kenmyfam]

Re: 140 Johnson no power/idle

Compression, spark and fuel. If the carb's have not been serviced in a while it would be a good idea to do that. Check compression and spark first though as that will show up if there is something more serious going on.

 

[Dhadley]

Re: 140 Johnson no power/idle

Yep, start with the basics. And get rid of the 93, use 87 octane only and Champion plugs.