I have a 98 gp760. Im thinking about removing the oil injection system and going straight premix. The exhaust at idle and low speeds is driving me crazy. Has anyone done this and noticed less smoke at low speeds?
What are you using for oil? Yamalube?
I prefer the injection, provided you do regular maintenance they are pretty much bulletproof. No hassle of carrying messy oil bottles and measuring cup. Just fill tank and go.
I don't know that you'd notice much difference going premix.
Your best bet is to change to a low smoke oil that meets the TC-W3 requirements. I think the Pennzoil premium xlf is. you'd have to check it though. Doesn't smoke on my injected outboards. I use a low smoke amzoil in my ski.