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Old 09-07-2007, 12:18 AM
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Default Is there any way to flush a Carburetor?

Hi
Is there any way to flush a Carburetor out with out taking the thing all apart? My Johnson 110 has been siting for 10 months, and I am Scared to try and start it, the gas may have gone bad? not sure?
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Old 09-07-2007, 12:28 AM
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Default Re: Is there any way to flush a Carburetor?

At the bottom of the carbs,on the bowls,you will see were there are big screws with a heavy spring behine the head of the screw.If you back them out some and prime up the motor,gas will flow out.The will just dump any trash and bad gas in the bowl area of the carbs.The biggest problem you will have if any will be the high speed jets plug which chances are or not.I say run it and don't sweat it!
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Old 09-07-2007, 07:25 AM
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Default RE: Is there any way to flush a Carburetor?

No.
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Old 09-07-2007, 09:40 AM
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Default RE: Is there any way to flush a Carburetor?

Hard to clean w/o removing -- my 2 cents-- use another tank with clean gas and some startron or sea foam
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Old 09-07-2007, 09:48 AM
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Default Re: Is there any way to flush a Carburetor?

Id take it off and spray the hell out of with carp cleaner then give it a good cleaning with an air hose if you that worried, but at ten mnths i would doubt you have anything bad in there.
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Old 09-07-2007, 10:40 AM
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Default Re: Is there any way to flush a Carburetor?

What's carp cleaner? Is that something you use to clean fish?
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Old 09-07-2007, 10:45 AM
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Default Re: Is there any way to flush a Carburetor?

A shock Treatment should do the job (seafoam) and it is not a major job like taking the carbs off.
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Old 09-07-2007, 10:54 AM
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Default Re: Is there any way to flush a Carburetor?

I would start by removing the old gas and adding new. I would remove all the plugs and squirt some oil in each cyl and crank it a few times. Then put in new plugs and fire her up and then do a compression check. If all seems fine then I would get the carbs rebuilt. The problem is if you have some clogged jets you may not notice the problem. The clogged jet or jetts will stop or slow down the flow of fuel which is also the form of lubercation as the oil is in the gas. My Johnson mech. says that most of his rebuilds are due to clogged jets which cause the cyl to burn up.
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Old 09-07-2007, 08:33 PM
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Default Re: Is there any way to flush a Carburetor?

Quote:
fishingfun - 9/7/2007 10:54 AM I would start by removing the old gas and adding new. I would remove all the plugs and squirt some oil in each cyl and crank it a few times. Then put in new plugs and fire her up and then do a compression check. If all seems fine then I would get the carbs rebuilt. The problem is if you have some clogged jets you may not notice the problem. The clogged jet or jetts will stop or slow down the flow of fuel which is also the form of lubercation as the oil is in the gas. My Johnson mech. says that most of his rebuilds are due to clogged jets which cause the cyl to burn up.


Naaah. Just try it. If it will run, just burn up the old gas by running the motor and then put in fresh. Done it many times with gas more than 10 months old. 90% of what we worry about never happens.
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Old 09-08-2007, 11:08 AM
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Default Re: Is there any way to flush a Carburetor?

Try:
remove fuel inlet hose at fuel pump leaving rubber hose connected to carb
drain carb and then retighten drain screw
squirt carb cleaner into inlet hose til carb & hose are full (Chem tool works fine)
reconnect hose to fuel pump and use squeeze bulb to force cleaner into carb
drain carb and repeat process again.
You may also option removing adjustment screws and pressure inject with cleaner.
Drain all carb cleaner
Reconnect fuel line and use squeeze bulb to to run fuel through carb while float bowl screw is backed out (Flush)
Retighten drain screw prime and start.
Important to catch drained carb cleaner since if allowed to drain into motor it will eat the paint
If above doesn't work... congrats, you need to remove, take apart, and clean carb
BTW... just try to run it w/ fresh fuel first.... if it ain't broke, don't fix it.
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Old 09-08-2007, 01:39 PM
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Default Re: Is there any way to flush a Carburetor?

No . . . But cleaning the carbs . . . is a great rainy day project. Pull them all apart and soak overnight in mineral spirits, clean the deposit with a little brush . . . gumout carb cleaner works well too after the deposits soak overnight . . . then dry with compressed air. Put in new needles, seats, gaskets . . . adjust the floats (if they need it) and your done!! It's a piece of cake. After you've done this once . . . You'll wonder why you ever paid someone to do this for you.

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Old 09-08-2007, 10:48 PM
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Default Re: Is there any way to flush a Carburetor?

Quote:
BigShrimpin - 9/8/2007 1:39 PM No . . . But cleaning the carbs . . . is a great rainy day project. Pull them all apart and soak overnight in mineral spirits, clean the deposit with a little brush . . . gumout carb cleaner works well too after the deposits soak overnight . . . then dry with compressed air. Put in new needles, seats, gaskets . . . adjust the floats (if they need it) and your done!! It's a piece of cake. After you've done this once . . . You'll wonder why you ever paid someone to do this for you.
BTW ,What He Said......

Cleaning Carbs Aint that hard.
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Old 09-09-2007, 08:17 AM
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Default RE: Is there any way to flush a Carburetor?

Quote:
twind - 9/7/2007 12:18 AM

Hi
Is there any way to flush a Carburetor out with out taking the thing all apart? My Johnson 110 has been siting for 10 months, and I am Scared to try and start it, the gas may have gone bad? not sure?
No, but in 10 months of sitting, the gas may have gotten crappy. especially if stabilizer wasn't added before the layup. I'd just try to start it and see what happens.
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Old 09-09-2007, 10:54 AM
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Default Re: Is there any way to flush a Carburetor?

Using an air hose could cause junk to jam in some of the smaller passage ways of a carberator.

Also, blasting with air can cause a static electric discharge. If your item has not been thoroughly degreased you could start a fire or cause an explosion.

For a carb thet's been on the shelf that long, it would probably be best to rebuild it. That way you know all the gaskets are in good shape and you have a better chance of getting gum and varnish out of the internal components.

If you really dont want to do that... Flush and refill the bowls as descriibed ealier. Take a can of cleaner with a straw, and squirt the exposed ends of the jets to back-wash them. If you can get some kind of container under the bowl you can see how much goop you are taking out. Repeat until no more comes out. Two or three times should be enough.

Dont forget to change the fuel filter. A new water pump impeller is probably in order along with at least an inspection of the fule pump components.

That's what I would consider the minimum. God luck!

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Old 09-09-2007, 12:02 PM
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Default Re: Is there any way to flush a Carburetor?

C'mon guys; it's 10 MONTHS not YEARS. Start the motor and let it run.
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Old 09-09-2007, 09:17 PM
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Default Re: Is there any way to flush a Carburetor?

Start with fresh fuel, new plugs and a well charged battery and crank it up! Should be fine. Might run a bit rough at first but they usually settle down. It's only been 10 months, should be OK.
If it's not you'll have to do all of the above mentioned anyway so it's no loss to just let-r-rip!
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Old 09-10-2007, 12:06 PM
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Default Re: Is there any way to flush a Carburetor?

What is a shock Treatment useing (seafoam)??
And no stabilizer wasn't used, I no a big mistake
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Old 09-10-2007, 09:20 PM
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Default Re: Is there any way to flush a Carburetor?

For what it is worth when I was working with an old 9.9 Johnson that had been sitting for a while with old gas I called the people at Sea Foam for advice. They basically suggested to take my small gas can and dump a whole can of the stuff in and run the motor. They said I did not have to worry about too much even though it was much more than called for on the Sea Foam can directions. I would also add some PRI-G to the gas when you are finished with the carbs.
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Old 09-11-2007, 06:56 AM
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Default Re: Is there any way to flush a Carburetor?

Quote:
Jimm - 9/9/2007 1:02 PM

C'mon guys; it's 10 MONTHS not YEARS. ...
D'oh!

I guess I got distracted. Just try flushing the carb and using fresh gas before anything more complicated.

Good luck!
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