- Sep 19, 2020
- Reaction score
- Smithville, Texas
I suppose every outboard is different. I stopped using Seafoam even though it’s good stuff but I tried Startron marine hd and on the second tank I noticed it running smoother and it treats the fuel as well. They claim it stops faze separation in ethanol fuel and when it encounters water it is broken down into particles that will burn with the fuel. Keep in mind I by none ethanol fuel only but you never know what’s coming out the pump. I purchase from the busiest store that sells a lot of it and the ethanol pump has to have it’s own separate hose set up if not the first 1/3 or so of a gallon you get is what ever the last guy purchased. Sometimes I’ll pump a couple gallons in my truck then fill the boat tank.Besides a stabilizer I use Seafoam to keep carbon buildup down and improve the idle on my two stroke outboards. Been using it for years and it makes a big positive difference. My little 1985 Merc 2.2 runs like a top, starts on second pull and all original except plug and impeller.
I just changed my fuel water separator filter after 18 months and it looked brand new. Poured it into a clean jar and let it sit for 30 minutes. Not a spec of water in the bottom of that fuel and I had my portable tank sit for a few months while I did some rebuild work.
Only problem the 1992 40hp Yamaha is hard starting cold and It can be a hassle pull starting that many times but it always starts. Rest of the day it’ll start first pull.