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Old 04-20-2009, 05:01 PM   #1
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Default RC8 fuel tank issue

My RC8 seems to have the known fuel tank issue. If I rev the engine while the buggy is level it's fine, but if it's tilted vertically in either direction, then I get sputtering from air in the fuel lines. I changed the gray tank to a new white one and I get the same thing. I changed the lines and I get the same results. Does this still sound like a tank issue? Does the new tank that I bought still have the issue? I can't see any cracks in either tank. I blow into it and I can't feel or see any leaks.

should I just buy another RC8 tank or are there other good compatible tanks out there?
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Old 04-20-2009, 05:13 PM   #2
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My 8 has been like that sense new even after 5, that's right, 5 fuel tanks. I'm sure it has more to do with where the pickup tube is inside of the tank that it does with the tank itself. Run it. Just hold it level when you are walking it to pit road.
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Old 04-20-2009, 05:13 PM   #3
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If this is happening when the vehicle is tilted with the nose down its because the fuel is rolling away from the pickup in the tank and cant suck the fuel out, this is common in all rc cars. Some models with a clunk tank the pickup will float around and still get fuel but on a fixed fuel tank it cannot.
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Old 04-20-2009, 05:13 PM   #4
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Call Don at AEW customer service he will point you in the right direction.
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Old 04-20-2009, 06:02 PM   #5
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what you are getting is normal. The pick up is in the back, so if tilted forward it will start sucking air.

This will not effect driving the car on the track, however if you are upside down waiting on a marshall or practicing, don't death rev the car too much because it will suck all the fuel in the line out, thn when flipped over and you punch it, it will starve and flame out.
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Old 04-20-2009, 06:15 PM   #6
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If you have the fuel tank issue, you'll pick up a lean bog around 2/3 of the way through the tank.
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Old 04-20-2009, 06:34 PM   #7
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i fixed my associated tank issues by taking off my motor and electronics and putting them on a losi
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Old 04-20-2009, 07:26 PM   #8
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Quote:
Originally Posted by SkarTisu View Post
If you have the fuel tank issue, you'll pick up a lean bog around 2/3 of the way through the tank.
Been there, done that.
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Old 04-20-2009, 09:51 PM   #9
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Quote:
Originally Posted by Brandon Melton View Post
what you are getting is normal. The pick up is in the back, so if tilted forward it will start sucking air.
Normal for the RC8 tank, or with all tanks???

My RC8T does this when I hold it nose down, my Mugen MBX-6 does not do this.
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Old 04-20-2009, 10:52 PM   #10
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When I ran rc8 I fixed this problem by installing a mugen mbx5r tank.No more odd tuning problems & if something did happen I was sure it was a tuning change not a tank problem.Most of the people with tank issues were internal leaks in the pickup tubes not external & you'll never find the problem by blowing in the tank with it submerged if that truly is your problem,but I thought they eventually fixed that problem, at least in the truggy tank.
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Old 04-21-2009, 01:55 AM   #11
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The newest tank I haven't had any problems. Only the smoke colored tank had the major problem for me. The 1st white tank gen2 cracked at the top of the fuel outlet. CA glue fixed that problem
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Old 04-21-2009, 07:27 AM   #12
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+1 on the mugen tank. Installed one and never looked back
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Old 04-21-2009, 07:39 AM   #13
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is the mugen tank a straight drop in ?
i still have the smoke colored tank cant say i have any
problems but do chase a tune some times
cant find the new ae tank all on back order
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Old 04-21-2009, 09:00 AM   #14
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I used the tank and the post. used AE holes
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Old 04-21-2009, 09:05 AM   #15
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Quote:
Originally Posted by scwrod View Post
I used the tank and the post. used AE holes
the posts from the mugen tank ?
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