engine dies and needs choke to start - Page 2

adrianinflorida · 03-24-2009, 08:11 AM

According to the manual, 2.7 Gallons in the "On" setting and 0.8 Gal in "Reserve" for a total of approx 3.5 Gal. Of whic 3.3-3.4 is probably useable.

If you put in 2.5, you probably had about a gallon left, and should have been a bit above the reserve inlet. I really wonder if you have some debris casuing some clogs in the petcock.

mrlmd1 · 03-24-2009, 08:47 AM

Why are we all making this so complicated? He may have just run out of fuel and needed the reserve setting to get the bike running again.
Keep track of your miles after you fill the tank (with the petcock in the ON position - see the arrow on the long arm, pointed forward), fill it every 150 miles, and see if the problem is solved. If you have run out of gas and emptied the carb bowl, switching to RES will still take a few seconds to get the bike started, and with the choke on and the engine warm, of course it's going to race. Just don't run out of fuel again.

Easy Rider · 03-24-2009, 10:38 AM

Quote:

Originally Posted by mrlmd1

Why are we all making this so complicated?

I think the "collective" had already arrived at that conclusion!
No need for too much.... :poke2: :poke2: :poke2: :biggrin:

Evil Sibhod · 03-24-2009, 04:21 PM

well i suppose my biggest error was in guessing how much the fuel would expand between filling it up at 35 degrees Fahrenheit to the projected 70 that it was when I filled up, and this made me forget that I probably couldnt put as many miles on that tank as usual, but it's working fine now

mrlmd1 · 03-24-2009, 05:27 PM

The volume expansion of gas between 35 and 70 degrees is insignificant - I just looked it up on the web and the standard coefficient of gasoline expansion/contraction is 0.069% per degree F. (0.00069/degreeF), and on another site it says the volumetric coefficient of expansion of gasoline is about 0.058%/degree F. (.0.000528/ºF). That's even less.
Using the higher figure of 0.069% expansion/degree F = 0.00069 x # of gal in full tank (say 3.4 gal in full tank) x 35 degrees temp diff = 0.08 extra gal., or less than 1/10th of a gal. difference with 3.4 gal at 35 compared to 70 degrees. Don't worry about it, and don't even think about it, you are not going to be filling up the tank to the very tippy top anyway.
And the fuel in the inground tank at the gas station is pretty much at the same temp all year long when you fill up anyway so you would be getting for all practical purposes the same amount (volume) of fuel each time, whatever the meter says, irregardless of ambient temperature. There may be a difference between Canada in the wintertime and Arizona in the summertime in the amount of gas you get per the meter read, but in one locale, the difference is minute.

Evil Sibhod · 03-24-2009, 10:30 PM

Yeah, good point, and thanks for looking it up, I was going to but didn't get a chance as I just got home from work. Makes sense though, I just never worried about it with my car because I could leave the nozzle in and just let the fumes hit the auto shut off, though that was back when gas was 4 dollars and my F150 was costing me 45 for half a tank, and I could watch the fuel gauge go down as I drove.

03-24-2009, 08:11 AM	#11
adrianinflorida Senior Member Join Date: Feb 2009 Location: Indialantic, Florida Posts: 325	Re: engine dies and needs choke to start According to the manual, 2.7 Gallons in the "On" setting and 0.8 Gal in "Reserve" for a total of approx 3.5 Gal. Of whic 3.3-3.4 is probably useable. If you put in 2.5, you probably had about a gallon left, and should have been a bit above the reserve inlet. I really wonder if you have some debris casuing some clogs in the petcock. Login or Register to Remove Ads
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03-24-2009, 08:47 AM	#12
mrlmd1 Senior Member Join Date: Jan 2008 Location: Crawfordville, Florida Posts: 2,853	Re: engine dies and needs choke to start Why are we all making this so complicated? He may have just run out of fuel and needed the reserve setting to get the bike running again. Keep track of your miles after you fill the tank (with the petcock in the ON position - see the arrow on the long arm, pointed forward), fill it every 150 miles, and see if the problem is solved. If you have run out of gas and emptied the carb bowl, switching to RES will still take a few seconds to get the bike started, and with the choke on and the engine warm, of course it's going to race. Just don't run out of fuel again.
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03-24-2009, 04:21 PM	#14
Evil Sibhod Junior Member Join Date: Mar 2009 Location: Bellbrook Ohio Posts: 19	Re: engine dies and needs choke to start well i suppose my biggest error was in guessing how much the fuel would expand between filling it up at 35 degrees Fahrenheit to the projected 70 that it was when I filled up, and this made me forget that I probably couldnt put as many miles on that tank as usual, but it's working fine now
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03-24-2009, 05:27 PM	#15
mrlmd1 Senior Member Join Date: Jan 2008 Location: Crawfordville, Florida Posts: 2,853	Re: engine dies and needs choke to start The volume expansion of gas between 35 and 70 degrees is insignificant - I just looked it up on the web and the standard coefficient of gasoline expansion/contraction is 0.069% per degree F. (0.00069/degreeF), and on another site it says the volumetric coefficient of expansion of gasoline is about 0.058%/degree F. (.0.000528/ºF). That's even less. Using the higher figure of 0.069% expansion/degree F = 0.00069 x # of gal in full tank (say 3.4 gal in full tank) x 35 degrees temp diff = 0.08 extra gal., or less than 1/10th of a gal. difference with 3.4 gal at 35 compared to 70 degrees. Don't worry about it, and don't even think about it, you are not going to be filling up the tank to the very tippy top anyway. And the fuel in the inground tank at the gas station is pretty much at the same temp all year long when you fill up anyway so you would be getting for all practical purposes the same amount (volume) of fuel each time, whatever the meter says, irregardless of ambient temperature. There may be a difference between Canada in the wintertime and Arizona in the summertime in the amount of gas you get per the meter read, but in one locale, the difference is minute. Login or Register to Remove Ads
	0

03-24-2009, 10:30 PM	#16
Evil Sibhod Junior Member Join Date: Mar 2009 Location: Bellbrook Ohio Posts: 19	Re: engine dies and needs choke to start Yeah, good point, and thanks for looking it up, I was going to but didn't get a chance as I just got home from work. Makes sense though, I just never worried about it with my car because I could leave the nozzle in and just let the fumes hit the auto shut off, though that was back when gas was 4 dollars and my F150 was costing me 45 for half a tank, and I could watch the fuel gauge go down as I drove.
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