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longislandcampe's avatar
Jan 18, 2017

Seafoam Test....

I have a little 98cc Toro snowblower that likes to gum up all the time even with Stabil and running her empty. In the past all I've ever done was remove the nut under the float bowl, clean out the holes and I was good to go. Last week I did that but she still sputtered a bit choked and died instantly at half choke. This was the first time I ever put store bought 50:1 fuel in her.

I know nothing about engines so everything I now know has been through tons of youtube videos and chat board threads in the past few days. My research leads me to believe that I need to remove the float on the carb, clean the needle and hit the tiny carb holes with carb cleaner and compressed air. Seafoam has also been a common suggestion so I finally got the liquid form and the aerosol form.

My snowblower only has about a cup or two of fuel so I put in about a cup of Seafoam in the gas tank. She started right up but died a few seconds after mid choke which is progress because she used to die immediately at half choke. I started her up again and as soon as I got to half choke I hit the air intake with the aerosol Seafoam and she sputtered a bit but didn't shut off. I would stop spraying when she sputtered with a ton of white smoke and would spray again once she got back to normal. I did this a few times and then went wide open and continued the same process for about 20 seconds. I eventually continued to spray until she shut down completely and then I put her in the shed.

In a few hours I plan to start her up again to get a fresh batch of fuel/seafoam in the lines. My initial report is that it works because it allowed me to take the choke off. I still have not cleaned the needle and other ports on the carb yet because I wanted to test out the Seafoam first.

On the camping related side, our 2 Honda 2000 genny's have been suffering from the same condition with not running except when choked. In the next few weeks I'll look at cleaning out those carbs and adding some Seafoam to them too.

So far, so good.
  • Every year when I get my boat ready for the season, I put 3 cans of Sea Foam in the gas tank (38 gal tank) for the first trip out. The boat is a 1999 Bayliner, Chevy 5.7L.
  • SeaFoam is pretty good stuff. What's better is to drain the bowl after use.

    Honda (and other) products have a convenient valve attached to a hose. It looks like an adjustment screw but near the bottom of the float bowl. It's not a plug but a valve. One turn and fuel should drain through the hose. A tuna fish can should catch it all. Don't use a foam cup!

    I wish my built-in Onan gen had a valve.

    Norm
  • cm11599ps wrote:
    In the next few weeks I'll look at cleaning out those carbs and adding some Seafoam to them too.


    SeaFoam was designed as a fuel stabilizer.
    As such, it is a good LIGHT DUTY cleaner.
    For a better carb cleaner, use Berrymans B12 Chemtool or Gumout.
    Not only a better cleaner but about 1/3 the price too.

    P.S. Putting in stabilizer AND running it dry is redundant.
    In many cases, it is best to leave the stabilized fuel in the carb for short periods of storage; less than 6 months.
  • eating fuel pump????? I,ve used sea foam in at least 5 outboard motors for ten years never ever had a problem. and the guy with the blower is doing it wrong ,put sea foam in gas tank let sit 30min then start.
  • SeaFoam is great is everything that does not have a fuel pump. If it has a fuel pump, it will eat it right up and you will be replacing the pump.
  • You can run 100 low lead aviation fuel in the Toro. It has no alcohol or additives and has an advertised shelf life of 2 years. The actual shelf life is much longer. We sell a bunch of 100LL at the airport this time of year, 2 gallons at a time.

    Do not run it in the Honda. The valve clearances on Honda engines are too tight and the lead will gum up the valve guide.
  • My experience has been that you need to be patient with Seafoam as it needs to sit in the carb for a number of hours to help dissolve the crud.
  • I started using non-ethanol gasoline in my mower. I try to remember to start and run it at least once a month during the winter and it seems to help. Most of the time I don't try seafoam until it's too gummed up to help.
  • Seafoam is great!! I have used it on everything from Lawn mowers to my diesel.

    My wifes car was throwing a code that indicated a stuck intake damper valve. It is about a $1K fix!! I put seafoam in a water bottle with a very small hole in the lid, pulled off the intake tube and started her car up. I would squirt the seafoam into the intake till the cars idle slowed then stop. Did this for half the bottle. Finally started it back up and then gave it a pretty good spray till it died and left it sit for an hour. Put it all back together and she has not had an issue in almost a year!!

    Chris

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