Use of Seafoam

[1stGrady]

I just purchased a can of seafoam and was wondering how some of you get it into the carbs and cylinders. I have a 150 2stk Yami carbed. The can suggests using a vacuum line that feeds all cylinders, or do I just feed it up the gas line? Whould it be better to feed through the carbs for cleaning. Thanks
Some 50 degree days soon.

[Megabyte]

Put it in the fuel tank. It will find its way to the motor.

[1stGrady]

But my intentions are to decarb the motor and I have 84 gallons of gas in there. I would need like 8 cans of the stuff. I was looking for a more efficient use.

[Reel-Rascals]

1stGrady - 3/26/2005 5:15 PM
I was looking for a more efficient use.

Could you run your OB from a pony (aix) tank? If so, mix that can with enough fuel to make a 1-gallon mix. Run @ high idle, don't let it stall, for 1/4 to 1/3 the mix, then shutoff for 15 minutes. Repeat running and repeat the waiting, until you're out of mix. Then re-rig up your main tank. All the work is done during the waiting ... . nce you're done, DON'T go out and runs it balls out immediately. Idle around, then cruise around a bit before you drop the hammer.

If you can't run yours via a small aux tank, then use that can in your car. Disconnect a vacuum line (from PVC Or from brake boost) and let it suck up 1/3rd the can, wait 15 minutes. It's a good idea to do so away from houses and windows ... don't be surprised if a neighbor calls the Fire Dept .

Back to your OB, get the aerosol version of Seafoam called "Deep Creep". It is AWESOME for carb'd motors as it also gives them a cleaning. Remove your air box/silencer for best results, then use 1/4 can or so, spraying from carb to carb, then the 15 minute wait. Repeat ...

Awesome stuff! I use it in my boats, cars, trucks, snow/leaf blowers, and chainsaws.

[1stGrady]

Now thats the info I was looking for.
Thanks
tight lines
BH

[Thom]

You can also pour it into a squeeze spray bottle and squirt it straight down the throats, one after another. It lets you control the sputter of the motor too - squirt in as much as you can without killing it, there is a fine line. Its kind of fun, and you won't believe the crud and smoke you sometimes get to see.

Thom

[theoldwizard]

Thom - 3/26/2005 6:03 PM
You can also pour it into a squeeze spray bottle ...

Good suggestion, but I would not leave any leftover in the bottle. I'll bet it would desolve the plastic within a few days.

[Ray Zor]

Seafoam called "Deep Creep".

This is what I used on my 1988 Johnson 225 looper. Sprayed directly into carbs while running.
Used entire can. I swear the engine idles smoother. Never thought it would make a noticable
difference. It does work.
Word of caution: If you do this with boat on trailer in drive way, be sure to put a piece of plywood behind prop to block the gooey tar crap that will blow out. It will get all over your garage door!
A fellow THTer gave this advise and I followed it.........

[Glen E]

this is how to do it...

http://www.thehulltruth.com/forums/t...=20628&posts=5