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Old 10-08-2009, 09:42 AM   #1
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Default Air bubbles?

I keep getting air bubbles in my fuel line. I have replaced the fuel line the tank isn't leaking. Its a losi eight with a sts .21 engine. Any ideas would be appreciated. Thanks
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Old 10-08-2009, 10:21 AM   #2
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Is the fuel supply line touching the pipe? My RTR came with the fuel supply line running through the lower mounts which had it close to or touching the pipe. I swapped it to the upper mounts and dropped the pressure line to the lowers. I didnt have problems either way but it is something to check.

If that doesnt fix it, perhaps the tubing has a leak or the clunk is stuck.
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Old 10-08-2009, 10:32 AM   #3
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You may not THINK that your tank is leaking, but that doesn't mean that it is not letting air in. Your carb could have a leak as well, have you removed your carb and sealed it?
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Old 10-08-2009, 11:01 AM   #4
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You may not THINK that your tank is leaking, but that doesn't mean that it is not letting air in. Your carb could have a leak as well, have you removed your carb and sealed it?
Leaking carb wouldnt make bubbles in the line, right? I wouldnt think a leaking tank would make bubbles in the line either since it's pressurized by the exhaust but I guess it happens.
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Old 10-08-2009, 11:45 AM   #5
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Check the external fuel filter, if you use one. Mine caused bubbles.
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Old 10-08-2009, 11:48 AM   #6
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NO NO NO NOOOOOO MY BUBBLES MY BUBBLES!
omg having little kids around hehe
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Old 10-08-2009, 12:26 PM   #7
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I don't run an external filter
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Old 10-08-2009, 12:40 PM   #8
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I don't run an external filter
i run 2 plus the one in the tank.
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Old 10-08-2009, 01:33 PM   #9
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My Xray 808 had that problem once in a while. Never did figure it out. Didn't matter what tank, pipe, engine or fuel lines I was using, it would just happen.
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