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What would Fuel treatments would you recommend to add to the fuel system to clean out the valves, fuel injectors, etc.

Thanks!!

We have used Sea Foam and Techron in the past with varied results for cleaning.
We use marine stabil for ethanol treatment and as a stabilizer.

Really they are just additives. Techron is your friend here though. If it's that bad pull them and have them professionally cleaned or someone that can do a motorvac cleaning or a BG fuel system clean. They may help. You can only get so much out at a time.
I'm a BG fuel cleaner additive guy but that's just me. We use it at work. I put it in mine in the beginning of the season. Notice any diff. Nope.

Like A7 said if I was running ethanal I would run the blue marine stabil. Great stuff. Designed for that environment.

Everyone everywhere will recommend their own special fuel additive to you. What I did was to ask my marine mechanic, and a forum of marine engine mechanics for my engine type, what's the best fuel additive is , and that's what I use. Then you need to use it religiously when you fill-up. It also needs to be reasonably priced. BUT all this it preventative maintenance.

I subscribe to this guy, very thorough and does some fun stuff like running a lawn mower on Everclear.

Personally, I put Stabil Marine in every tank, and threw some injector cleaner in my first tank this year.

Yes I saw this..pretty good, I like it. I like how he puts the see thru glass or plexy glass in the lawnmower head so you can see the lawnmower internal combustion...this guy would of been a good lab partner in college. However, a lawnmower is not a V-8.