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White gas vs. Cheap a$$ gas in lawn equipment

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ShepFL

07-21-2001 19:27:26

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For the 5th time this yr, I have had to remove the carbs and clean varnish from .020 inlets. These are mounted on 2-stroke Homelite weedwacker and handheld brush cutter. Sick and tired of having to do this nearly every time I need to use this equipment.

Varnish is from the cheap a$$ gas available today. Twice it has happened with gas that is no more than 2 wks old. Switched to burning hi-test (oxygenated - by FL law) hoping to reduce this.

At my wits end and seriously considering using white gas aka camp gas instead. Anyone know of any potential risks, i.e. eat seals, gas lines, insufficient lubrication etc. Next alternative is portable fence with goats!!!!

Thanks in advance.

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Al English

07-23-2001 17:13:37

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Re: White gas vs. Cheap a$$ gas in lawn equipment in reply to ShepFL, 07-21-2001 19:27:26

Hi Shep,
White gas is not suitable as motor fuel in any modern engine. Lantern fuel isn't even gas, it's a high grade of mineral spirits. High test gas won't hurt anything, but neither should it be necessary. I'm wondering whether your problem might be the result of the type of 2-cycle oil you're using(you aren't using standard motor oil are you?), your gas station, a contaminated gas can, or from existing deposits already inside the tank. Lacquer thinner does a good job of dissolving fuel deposits. If you use lacquer thinner be careful, even momentary contact with many types of plastic, rubber, and synthetic materials can ruin the part. And of course, don't light a match to see what you're doing.

I considered the goat mower option myself. But having seen them eat the bark off of certain kinds of trees, I decided against it. Good luck...Al English

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John Ne.

07-23-2001 07:57:31

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Re: White gas vs. Cheap a$$ gas in lawn equipment in reply to ShepFL, 07-21-2001 19:27:26

Shep, where you storing this thing? I imagine a tin yard shed in the Florida sun might reach 150degree inside. Which would evaporate the gas all that much faster. Any way you can keep it out of the heat, and still be safe with the gas fumes? John

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Mac

07-22-2001 14:12:11

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Re: White gas vs. Cheap a$$ gas in lawn equipment in reply to ShepFL, 07-21-2001 19:27:26

Shep: I have had good results with product called STA-BIL additive. There are other brands of course but I prefer the one above.

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Greg D.

07-22-2001 08:14:59

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Re: White gas vs. Cheap a$$ gas in lawn equipment in reply to ShepFL, 07-21-2001 19:27:26

Do not run the "white gas" you mention. The results you will end up with are not a pretty sight at all. I believe it was Amoco that used to sell that type of gas YEARS ago, O.K., MANY years ago, we tried it in our two stroke motorcycles and it is a VERY hot running mix that will tend to do nasty things to pistons and such. It was meant for camp stoves and lanterns for a reason!!!!! ! What type of oil and at what % mix are you using in this item? If you are comvinced your problem is the gas and not the oil you are mixing with it,then I would go with the reccomendation of the other posts and use the fuel stabilizer to prevent the varnish. I never have been a big fan of running things until the carb is empty, allows to many things to dry out and causes other types of problems. Do you also allow the engine to run full throttle at full engine temperature for a sustained period of time to make sure it is cleaned out? Just a few things you might consider before drainng the old Coleman lantern

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Al English

07-23-2001 17:29:44

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Re: Re: White gas vs. Cheap a$$ gas in lawn equipment in reply to Greg D., 07-22-2001 08:14:59

Hi Greg,
White gas is gasoline....period. It contains none of the additives present in gasoline motor fuel. The octane of white gas is very low. White gas is used in lanterns and camp stoves to avoid the deposits that would result from using motor fuel. In spite of what their ads insinuated, the lead free gas Amoco used to sell was not white gas. Although it did not contain lead, it did contain motor fuel additives. One of those additives was a nickel octane improver that took the place of the missing lead. Now that I've ruined that for you, lets talk about the Easter Bunny..... .....Al English

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roger

07-30-2001 12:42:32

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Re: Re: Re: White gas vs. Cheap a$$ gas in lawn equipment in reply to Al English, 07-23-2001 17:29:44

Sta-Bil is your answer, my friend.
No one uses this stuff every day, so varnish is going to be a problem--and stabil and similar products cuts existing varnish and prevents formation of additional varnish.
I'd take off the gas tank and shake and rinse it with a half pint of any gasoline and dump it out into a clean, clear container. I'd bet on a lot of crud. Either way, installation of a see through in line fuel filter can both give you a warning and prevent recurrences. An intermittently plugged jet can cause unpredictable starting. Instead of tearing it down, start it on starting fluid and keep it running by squirting in a bit every few fractions of a second--until your crud gets pulled through. I've done this on a small sears/poulan a couple of times
You might try a partial tank of 10% alcohol gas--I think you mentioned this--the alcohol is a great solvent and will breakdown varnish, too--BUT DON'T STORE IT WITH ALCOHOL GAS in it.
A new gas cap might help, too. If you do hot storage, the vapor pressure will pull off the volatiles that help to start a gas motor, and leave the harder to light components.
Here's to fewer teardowns!
r

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walt

07-22-2001 05:10:47

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Re: White gas vs. Cheap a$$ gas in lawn equipment in reply to ShepFL, 07-21-2001 19:27:26

I quit running my small engines dry. Never could get all the gas out. Switched to gas stabilizer. I add it to all the gas cans I have. Havent had a gum up problem in yrs.

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Dean

07-22-2001 03:50:10

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Re: White gas vs. Cheap a$$ gas in lawn equipment in reply to ShepFL, 07-21-2001 19:27:26

Put a small amount of B12 Chemtool in the tank after each use... end of problem!

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Cal S

07-21-2001 20:23:58

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Re: White gas vs. Cheap a$$ gas in lawn equipment in reply to ShepFL, 07-21-2001 19:27:26

Shep, after each use empty out the gas tank and run the gas all out of the carb. Small size of the carb lets gas evaporate rapidly and causes the varnish problem. If you don't want to empty it out at least put stabil gas additive in the gas mix it will help to keep the gas fresh.

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