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carb cleaner fuel additive 2-stroke ?

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carb cleaner fuel additive 2-stroke ?

Postby ALX357 » Fri Jul 29, 2005 12:42 am

carb cleaner fuel additive 2-stroke ? Is there a product available made or suitable for 2-stroke engines which will clean the fuel system including carbs, having similar properties as the excellent Techron fuel additives Exxon makes. I know Exxon is not PC, so let's not start a confab about .....
... note that the two large marine supply stores WM and BW do not seem to have something that exactly fits this description; closest thing is for fuel injectors...... - similar, but suitable for carburetors ??
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Postby waternwaves » Fri Jul 29, 2005 12:54 am

ALX

How old is your outboard....????

original gaskets and O-rings in the Mercs in the mid 90's did not have a good reputatation/record with many of the ethanol fuel formulations that were being used around the country....

They seem to be much better now... but if your carbs/injection are compatible with the ethanol.....it will clean out just about everything..except large rust chunks....

Moe...you have an bigfoot.....seems about 98 the seals and gaskets stopped having problems...????
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Postby ALX357 » Fri Jul 29, 2005 1:13 am

it is a '95~95 Classic Merc.
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Postby Sloop John B » Fri Jul 29, 2005 5:40 am

The two strokes can really gum up when left alone a long time. I run the fuel out of them by disconnecting the fuel line. Mechanic tells me that helps but doesn't solve the problem. Best to run them at least once a month. He says with earmuffs with plenty of pressure. Cautions that the plastic bucket might screw up with 'bubbles' and cause overheating.

Says the same about the 4 strokes. So, who knows?
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Seafoam

Postby Timm Miller » Fri Jul 29, 2005 7:27 am

Seafaom can be used in two stroke mixes
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Postby Moe » Fri Jul 29, 2005 7:56 am

Any carburetor can gum up as the gas evaporates, and ever since oil injection, I don't think 2-strokes are any worse than 4-strokes. Running the engine 'til it dies doesn't get all the fuel out of the bowl, and may leave the main jet immersed even though the fuel level has dropped below the slow/idle jet. There are any number of fuel additives and sprays.

Mercury has Quickleen and Fuel System Cleaner, in addition to PowerTune decarboning spray.

Bombardier has 2+4 Fuel Conditioner, in addition to Engine Tuner spray.

Yahama has Ring-Free.

I forget who makes it, but NAPA carries Seafoam Motor Treatment additive as well as their Deep Creep decarbonizer.

And of course, there's Chevron's Techron, and I use the more expensive concentrated bottle.

Mercury was known to have problems with ethanol fuel, but my manual says it's okay to use fuel containing up to 10%, just don't use methanol. Not sure when that changed.
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Postby Catigale » Fri Jul 29, 2005 8:20 am

Mercury was known to have problems with ethanol fuel, but my manual says it's okay to use fuel containing up to 10%, just don't use methanol. Not sure when that changed.


Just a quick note - Dry Gas is basically straight methanol, and I have contemplated putting it into my tanks after winter to scavenge any water that might have accumulated.

Sounds like I should not do this for a Mercury???
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Postby Don T » Fri Jul 29, 2005 10:12 am

Hello:
The best long term storage method is to pop the hood and open the drain on each carb bowl. I have been doing this since my Tohatsu was new. This year I decided to pull the carbs and clean them. They were spotless inside, not a hint of gum or deposits. If your boat is in a slip, run it until it dies then put a rag under the carb to soak up any gas that comes out. The cool thing is even the rust that may have accumilated goes right out the drain too. Just don't loose the screw. :D
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Postby jim nolan » Fri Jul 29, 2005 6:14 pm

I have a 40 horse tohatsu 1993, that runs great. I change the plugs, and change the bottom oil. I t has three plugs, so does that mean that it has three carb. bowls. Somehow I never saw them. Am I on the right track here. If I can find them, I will drain them.
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Postby Chip Hindes » Fri Jul 29, 2005 6:33 pm

Jim, if after 12 years, you've never drained the carb bowls, forget it.

I have the '00 oil injected Tohatsu 50. In five years have never drained the (three) carb bowls, usually winterize in mid January after the boat has sat idle for 60-90 days, and with new gasoline and plugs in the Spring it starts after cranking for 8-10 seconds.

This baby positively thrives on neglect, and only a fool would mess with this kind of success.

I've frequently admittted to a hefty dose of four stroke envy, but every time I see one of the guys on this board whine about his Honda/ Yamaha/ Mercury/ Suzuki I have to chuckle. At least Tohatsu got one thing right.
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Postby ALX357 » Fri Jul 29, 2005 6:59 pm

SO.... is TECHRON a safe product for adding to the fuel for engine treatment on a 2-stroke Merc vintage '94-95 ??
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Postby Moe » Fri Jul 29, 2005 7:18 pm

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Postby kmclemore » Fri Jul 29, 2005 10:46 pm



Wow. Napthline and Stoddard solvent. Almost like the old trick of tossing a few moth-balls into the tank! ;)
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Postby jim nolan » Sat Jul 30, 2005 12:03 pm

Thanks Chip, I won't hold you to it, but thats the kind of advice I like. When I see some of the problems some guys are having, I feel so lucky, with this motor.
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Postby Casey » Tue Aug 02, 2005 11:53 pm

Regarding ethanol and methanol. Opinion only, no hard facts; I think it depends on what material the float in your carbureator is made and the needle valve assembly. Some materials degrade quickly when exposed to strong solvents such as ethanol and methanol.
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