How long before gas starts to "gunk" up your fuel system? - TwoWheelForum: Motorcycle and Sportbike forums
 
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post #1 of 9 (permalink) Old 12-02-2004, 08:31 AM Thread Starter
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How long before gas starts to "gunk" up your fuel system?

For those of us with carbs, it can be costly. How long does it take sitting in a tank before it messes with your fuel system?
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post #2 of 9 (permalink) Old 12-02-2004, 08:48 AM
 
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I dont plan on letting my Kat sit that long to find out...

but I know with my old yamaha, that sat for basically a year and a half before I bought it, and the prev. owner only started it up in the spring, and summer a few times the year b/4 and that was it. didnt ride it.

I got it and it ran fine, no problems with it.
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post #3 of 9 (permalink) Old 12-02-2004, 10:28 AM
 
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From the old chemistry class, gas is very volatile, meaning it evaporates quickly. Evaporation causes cooling. Cooling causes water to condense. Hence, water and rust in the steel gas tank. The evaporating volatiles also concentrates and leaves behind varnishes that gum up everything. But the gas in a (full) tank doesn't evaporate as quickly as gas in a carb. If gas can keep on flowing into a carb, such as when the petcock is left on prime or if the float needle leaks, the thin jets (especially the idle jet) will clog. The rate will depend on weather, type of vents, and quality of gas.
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post #4 of 9 (permalink) Old 12-02-2004, 05:49 PM
 
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I have found it depends on where you buy the gas. I have stopped at some places where I wonder what they really store in their tanks. I have it fail in as little as 3 weeks
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post #5 of 9 (permalink) Old 12-03-2004, 12:34 AM
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Many people conceve that gasoline "gunks" up...it doesn't!! Allow me to explain.

The additive that goes into your gasoline when it is pumped from the large above ground tanks to a semi to be taken to your gas station. The additive is more like a thick jelly type susbstance. This allows a larger quanity ratio.

The additive settles out and causes the "gunkness"...




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post #6 of 9 (permalink) Old 12-03-2004, 11:41 AM
 
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Thanks Gas Man for the info on gas for us.
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post #7 of 9 (permalink) Old 12-03-2004, 06:13 PM
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Anytime GSXR man!!! or maybe you the boy and Twisty is the MAN!!




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post #8 of 9 (permalink) Old 12-03-2004, 06:56 PM
 
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Quote:
Originally Posted by Gas Man
Anytime GSXR man!!! or maybe you the boy and Twisty is the MAN!!

Well, hes younger then I am but one hell of a rider. A lot more ballzier then I am. But thats ok. Its all about riding and thats what we all do and do it to the best of our abilities.
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post #9 of 9 (permalink) Old 12-04-2004, 07:26 AM
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I know sir, but I had to bust your ballz!!




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