Gas tank question - Star Motorcycle Forums: Star Raider, V-Max, V-Star, Road-Star Forum
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post #1 of 45 (permalink) Old 10-02-2010, 10:11 PM Thread Starter
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Gas tank question

Just got my 03 1100 vstar and when I put gas in it it fills funny.
The tank fills normally until it gets to the inlet tube. I top it off and the level slowly drops until I have to put more in. I have to do this several times to get it to full.

What is up?
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post #2 of 45 (permalink) Old 10-02-2010, 10:29 PM
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Fill tube

I think they extend the tube down forcing you to not over fill. Unless you plan to ride right away I would stop the first time. Expansion as the gas warms up can overflow the tank.
Dave
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post #3 of 45 (permalink) Old 10-03-2010, 07:54 AM
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I have an 04 1100 VStar Custom and mine fills fine, has never acted the way you describe. When I'm filling the gas tank I have to be careful to pump the gas in slow as it nears the bottom of the filler neck tube or it will overflow. I don't have a clue why yours does this, just thought I'd let you know it doesn't seem like yours is normal. Also have some friends with VStars of different years that fill like mine.
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post #4 of 45 (permalink) Old 10-03-2010, 10:10 PM
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Quote:
Originally Posted by linerdave View Post
I think they extend the tube down forcing you to not over fill. Unless you plan to ride right away I would stop the first time. Expansion as the gas warms up can overflow the tank.
Dave
I have found what linerdave is sayin to be true, I was down south in very hot weather, filled up and topped off thinking we were going ahead, but ate at a place next door, when I came out, gas was pouring over the side of my tank! I think maybe shut it off when the pump says to Ride safe.

Ride Safe, Live Long
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post #5 of 45 (permalink) Old 10-03-2010, 11:17 PM
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my 09 V Star 950 fills the same way. gas comes to the top, but if i just barely squeeze the pump then i can keep pouring in some more even though it looks full already
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post #6 of 45 (permalink) Old 10-03-2010, 11:17 PM
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^ +2 w/Liner. Too bad these things do not have a breather/overflow set up like most FI bikes do.
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post #7 of 45 (permalink) Old 10-04-2010, 11:12 AM Thread Starter
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OK, how many miles do you guys get on your 1100s ? If I don't tippy top it off I go to reserve at about 110 mi.
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post #8 of 45 (permalink) Old 10-04-2010, 11:24 AM
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The inlet tube length is designed to trap air at the top of the tank to do just what the other members here are saying, so's you don't overfill. What you are discribing is the gas level dropping inside the inlet tube as the air has to escape out the vent lines, before the tank is filled up to that point, the air can escape out thru the inlet tube while you are filling it so the gas will go in as fast as the pump can pour. The air can't escape as fast thru just the vent line. To get the most gas in to a safe level, just fill it while it's on the kick stand (don't run it up the inlet tube too many times) and then you are good to go no matter how hot it gets or how fast it gets hot.




Last edited by stratowart; 10-04-2010 at 11:47 AM. Reason: added a few more words
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post #9 of 45 (permalink) Old 10-08-2010, 09:40 AM
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Good Reading guys. I always wondered why it did that. Now I know I should just quit after it reaches the neck the first time. Thanks.

Mobile, AL
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post #10 of 45 (permalink) Old 10-08-2010, 10:46 PM
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Mileage

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Originally Posted by RagdollRacer View Post
OK, how many miles do you guys get on your 1100s ? If I don't tippy top it off I go to reserve at about 110 mi.
I get around 140 on my '03 1100 before I have to switch. A lot of it depends on how hard I run it. I've had times where I only got to around 115-120 on days I'm out running it hard. Hope this helps.
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