Hello, first post as Im a newbie to this forum and boat repair. A little background. I bought a 1990ish Gambler with a Suzuki DT175 outboard, at purchase the owner told me when it was first started it would take a while to warm up, and bog down under load, under the cover the engine looks brand new. I took it out and it fired up straight away, and would idle perfect but when put under any load whatsoever would sputter out and die. I assumed the carbs needed to be cleaned but when I took them down they looked great. I replaced 1 fuel filter and cleaned out the other one, I also replaced spark plugs. At the time that I tore down the carbs I also decided to disable the oil injection and mix it myself partly for reliability and partly because the pump was leaking oil around its gasket. As I had let the boat sit for a good while I changed out the gas and mixed at 50:1 I started the engine up and it fired up quickly but was producing a lot of smoke which I expected but this was a lot of smoke and had a strange smell, and also burned the nostrils. I let it run for a few minutes and then turned it off. It seemed to be pulling good water in through the muffs but felt very hot to the touch. I then recalculated the oil mixture and realized I had under mixed. I added more oil and fired it up again today, again it started straight away but was belching the noxious white smoke, and became too hot for me to hold my hand on in under one minute. so I suppose I have two problems the white smoke and seemingly overheating, as well as its inability to run under load. Sorry for the length, just wanted to get in as many details as I can. your help is greatly appreciated. -Drew
