BRP Johnson Evinrude OMC Engine Tuner 777185

Excellent product, especially for decarbonizing old engines.

It's expensive, but it works better than anything else I have used before. It has a skull and crossbones on the label, so that's how you know it works good.

Great product for cleaning carburetors.

Works! Carburetor cleaner cheat code. Drained carbs. Filled carb bowls. Waited 5 minutes. Repeated that process two more times. Can clean up to 8 carburetors with one can.

I have a 96 Johnson 90hp outboard and I've done a few things to try and get it running happier at idle instead of dying. Before trying this I'd done Seafoam and other fuel treatments, and replaced the plugs and wires. Ran better but I still felt there was something lacking. I bought this engine tuner on a whim based on the great reviews but I was skeptical, figuring it would be no different than Seafoam. Not so. Ran the whole can through the carb throats as the instructions state, which took about 15-20 minutes. Couldn't spray much at once since it would bog down the engine. Still wasn't sure there would be much change. Then allowed it to sit overnight and ran it again 15 minutes the next day as instructed. Well, I'm giving it 5 stars. Engine runs smoother at idle and doesn't want to die on idle in the water like it used to. Well worth the money and I highly recommend it. I think it runs quieter now at all RPMs so the wife is happier too. I'll probably make this part of my annual maintenance going forward.