BRP Johnson Evinrude OMC Engine Tuner 777185

This stuff works great. On everything. Used a whole can as directed on my FICHT engine. There already was much less smoke near the end of the can. After letting sit for 24 hours there was some smoke at higher RPMs as the residual carbon was being burned off. There was black oily residue on the grass by the exhaust from the carbon. Boat engine ran so smooth after. I also used this to clean the carbon deposits off my piston and cylinder head of my lawnmower when I replaced the head gaskets. Dissolved it right up. I will order more and use this on not only my boat yearly, but also on all my small engines.

Très bon

Great product for cleaning carburetors.

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.

I used it to clean the carburetors on my bike and boat as well. Both are running like new again.