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Old 03-27-2015, 12:54 PM   #1
badc91
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In need of some help

I have an 03 gsxr 750 bike has been running like a beast since the rebuild, but I've noticed as I start running low on fuel "before the fuel light comes on" I get a little spudder. On a full tank It runs fine with no problems at all ! Is the fuel pump starting to get weak or ? Anyways any advice would be greatly appreciated
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Old 03-27-2015, 01:08 PM   #2
El Pachuco
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the vent on your fuel tank may be stopped up and creating a vacuum as the fuel level goes down. Next time it starts to spudder, try pulling over and opening the fuel cap to relieve the vacuum. Listen for a sucking sound as you open the cap.

Of course this is provided the vent is in the fuel cap. If not, you'll have to figure out where it is and check it there.
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Old 03-27-2015, 01:18 PM   #3
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I'll give that a try it's an after market screw down fuel cap which I'm not fond of ! I'll be replacing it soon but I'll see if that's where the problem is
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Old 03-27-2015, 07:21 PM   #4
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Lift the tank and see if a line is kinked at the rear of the tank
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Old 03-27-2015, 09:43 PM   #5
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Yeah I made sure I kept the line straight when I was reassembling the bike but u could tell someone had the tank off before and had kinked the line going back on but I straightened it out best I could so I don't think it's that I'm going to take a pic of the fuel tank lid and post it up later cause really after seeing how it's made I'm not exactly sure how it's suppose to vent
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Old 03-28-2015, 08:57 AM   #6
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i would take the tank off, and pull the lines and inspect the nipples. I would replace that line that was pinched as well. Mine were very calcified.
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