- Joined
- May 15, 2020
- Messages
- 9
I bought this engine that had been sitting for a few years. A 1979 johnson 235. I estimate it was sitting for 3 to maybe 5 years. I went through the carbs, replaced the water pump and lower unit oil. Engine wasn't stuck or hard to turn. I got it running but it has a really hard time idling. Only way to get it to idle right is to basically turn the idle screw (timing advance i guess) almost all the way in. I knew this didn't seem right so I double checked all the idle jets and idle air passways. Everything is clear. The guy who owned it before me had put brand new carbs on the engine. Took the boat out and it runs great at high rpm. It bogs at probably 25% throttle for a little bit. I have a feeling its because the throttle plates are opening the throttle valves early. But I can't get the engine to idle with out turning that screw in a bunch. Do you guys thing I have a stuck ring? Engine runs great otherwise the idle problem. Likes to shut off in reverse and forward, unless the screw is all the way in. Been doing the decarb procedure and haven't noticed a big difference.