Stroked
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Fuel filler keeps backing up... Ideas?
- Thread starter da_raabi
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da_raabi
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So none of the above helped the situation at all... SO. Heres my thought. I'm going to disconnect the filler vent (the smaller line next to the large filler) and replace it with a long line of heater hose out to the back bumper with an air cleaner on it. The reason for this is I looked in the filler, and the way it is designed makes it so that when fuel backs up, it fills both lines thereby making it impossible for fuel to enter the tank. This is why I am thinking run a SEPARATE vent line out to the back, thereby eliminating the (what I think) problem. More to come...
GTME94
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Just be careful about your new line getting full and leaking fuel out. I think the design is intended to go back into the fill pipe so any splash back or burps of fuel goes back into the tank and not out somewhere. I looked at the service manual and pictures of my tanks without the bed on. The two lines go into to two different openings in the tank, I don't think they should both get full of fuel unless something is wrong.
da_raabi
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The problem is not the tank side, I think it is the filler side. Fuel had backed up, and from what I could see it had completely blocked the opening for the vent in the filler neck. Obviously I am having a venting issue, because I could not find any kind of clog, and at this point I cannot put any more than 10 cents of fuel in at a time and by the time I hit a gallon it backs up completely where I can no longer put ANY fuel in.
da_raabi
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Well I tried a few more things...
1. I disconnected the vent line at the charcoal canister to eliminate the possibility that it might be plugged... NO GO
2. I blew out the main vent line with air, got some junk out. I then blew out the two vent lines from each tank (the T into the main line going to the front right next to the tank switching valve). Funny thing is that when I blew out the line going into my malfunctioning tank (the only one in service right now), it blew a ton of fuel out the filler, which I thought strange. Anyway STILL NO GO
So at this point I think I need to drop the tank. My thought is this: in this picture you can see the three outlets (supply, return, and vent). Below one of those lines is what looks to be a valve of some kind (hanging into the tank). For those who have torn one of these apart before is that a pressure release valve? Could it be that that is blocked up and unable to open? I am thinking that this may be my problem, because I can think of nothing else it could be!
1. I disconnected the vent line at the charcoal canister to eliminate the possibility that it might be plugged... NO GO
2. I blew out the main vent line with air, got some junk out. I then blew out the two vent lines from each tank (the T into the main line going to the front right next to the tank switching valve). Funny thing is that when I blew out the line going into my malfunctioning tank (the only one in service right now), it blew a ton of fuel out the filler, which I thought strange. Anyway STILL NO GO
So at this point I think I need to drop the tank. My thought is this: in this picture you can see the three outlets (supply, return, and vent). Below one of those lines is what looks to be a valve of some kind (hanging into the tank). For those who have torn one of these apart before is that a pressure release valve? Could it be that that is blocked up and unable to open? I am thinking that this may be my problem, because I can think of nothing else it could be!
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