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Fuel siphoning problem.

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T

tazzman68

RCTalk Rookie
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Tacoma
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  1. Bashing
I just picked up a Traxxas Nitro 4 Tec Pro, and it seems that the pressure nipple on the pipe is lower than the inlet on the tank, and if I leave fuel in the tank, it slowly siphons back up the pressure tube, and drains down into the pipe.
Does this happen to anyone else?
And yes I know, it wouldn't happen if I didn't leave fuel in the tank! lol
Or is there something wrong somewhere?
Thanks,
Eddie:bandit:
 
yeah I had thought of that too, and double and triple checked to be sure.
 
Hmm. What's weird is that the fuel is being sucked into the pipe. Did you fill up the tank all the way to the top?
 
it is full, but there is space between the fuel level and the tanks top, and none in the filler neck.
another thing is it appears that the pressure fitting on the tank actually extends about half way down into the tank itself, putting the bottom tip in the fuel. I will try to get some pics.
 
can't seem to get a pic that you can see what I am talking about in.
but another weird thing, if you lift the fuel lid just enough to break the seal, the fuel drains right back into the tank.
 
Thought I would let anyone interested know I discovered the problem.
The fuel pressure side of the tank, DOES go all the way to the bottom of the tank, and at the very bottom is a little blue checkball to prevent fuel backflow. It was stuck.
Got it unstuck, but am wondering if there is something safe to dip the tank in to remove anything else that may be gumming stuff up?
 
Take out the tank and fill it half full with denatured alcohol and shake it up real good.
Let it soak for a while, and shake it again. That should remove any gummy stuff left over from dried out fuel.
 
Last edited:
Yeap I always do the denatured rinse after I've run it a few times, and I never leave fuel in the tank for more than an hour or two. I always remove the fuel that I'm not going to burn and put it in a seperate can. That's my can to waste on things like cleaning air filters and feeding to the neighbors cat when it comes on my porch and scratches up my window screen. In fact, I switched over to 20% a few weeks ago in all my rigs. The 30% was killing the darn things too quick and they were droppin off before they could make it home. Stunck up the whole yard. With 20%, they just have enough time to make it back over to the nieghbors house =devil
 

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