99 Ram fuel filler neck rusty/leaking

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kevm14
Posts: 13936
Joined: Wed Oct 23, 2013 10:28 pm

99 Ram fuel filler neck rusty/leaking

Post by kevm14 » Fri Oct 04, 2019 7:06 am

The STS fuel pump stuff reminded me of this. I don't know how long this has been happening, when I fuel up my truck, right before the pump clicks off, it makes a small puddle of gas. Poking my head under there revealed a rusty filler neck or possibly the vent pipe. Either way, the replacement option is this:
https://www.rockauto.com/en/moreinfo.ph ... 37&jsn=525

Which is $43. I should probably order it...

The only real complication to the job I can think of is the condition of the filler hose and vent hose. They could be pretty hard by now.

Fortunately there is a filler hose I can get: https://www.rockauto.com/en/moreinfo.ph ... 37&jsn=554

Which is $11.55. The vent hose may just be a size up and cut to length type of deal if it ends up being hardened.

kevm14
Posts: 13936
Joined: Wed Oct 23, 2013 10:28 pm

Re: 99 Ram fuel filler neck rusty/leaking

Post by kevm14 » Sun Oct 13, 2019 3:30 pm

Did this today. It was not that difficult. Procedure went like this:
- Loosen filler and vent hose clamps. Loosen to the clamp at the tank because I was going to replace this hose anyway.
- Remove 4 screws holding filler neck to body/bed
- Wrestle the hoses off the neck pipes. The way it went down is, the filler hose pulled off the tank pretty easily. The vent basically just broke because of how rusty it was. The tricky part of this job was extracting the broken length of pipe that was in the vent hose because I was not planning to replace the vent hose, I couldn't just cut it or whatever.
- Install filler hose on tank, clock the right way. Tighten clamp.
- Install filler neck. Slide filler hose and vent hose onto neck pipes.
- Install screws holding neck to body/bed.
- Tighten clamps.

Very accessible and pretty simple job. This should eliminate my POS issue of fuel puddling when I top off the tank.
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Almost seems like this was some sacrificial anode. The bed seems pretty clean. In the middle right, that is mud, not rust.
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Removed. Took 35 minutes to get this far according to the photo times.
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Vent hose that I was reusing.
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Shot of the tank filler nipple. Plastic tank of course.
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Another 20 minutes to get the new one installed. The new hose came with clamps but the new filler didn't come with new screws. I was able to reuse.
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Old one was pretty rusty.
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Anyway, all done. Satisfying. I will try to report back after I get gas next time to confirm I fixed the issue. I'm sure I did.

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