Originally Posted by LobstahClaw

Not necessarily.

I pulled the bed to get at the tanks on my 94 a couple of weeks ago. With the bed out of the way everything is right there in front of you.

I dropped both tanks & opened everything up to get a good take on the overall condition of things. The rear tank was a lost cause so i just capped the lines going back there and left it out.

The filler neck assy on both tanks is the same. I've got the rear filler neck assy sitting on the desk right next to me.

The inside plastic tube is about 1 1/8" OD. It extends 5" past the outer hose which is about 2 1/4" OD.

The plastic tube is the filler and is meant to extend 5" into the tank.

It's the same on both tanks and that's the way it was intended to be.

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It may be that a 92 shortbed is set up different. Could be that they're the same.

Here's the thing.... a week before doing anything with the fuel tanks i unscrewed the three 7 mm screws & two hose clamps holding the filler neck assy on the midship tank & pulled it.

It was getting rusty so i wanted to give it a coat of primer and a couple of coats of paint before it rusted through.

When i went to reinstall it that plastic tube would not feed back down through the outer rubber hose and down into the tank.

That's why i pulled the bed ... so i could get a better take on what was happening.

Long story short ... it's a PITA to reinstall a filler neck with everything in place. It has to be twisted and turned in a very specific way in order to get it to feed back down in again.

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If i had to guess on welder's problem there is one of two possibilities.

1: The guy before him ran into the same problem and instead of doing it right he cut the plastic filler tube off flush with the outer rubber hose so that it would go back together.

2: If he's going to the same pump and the same station every time it might not be a problem with his truck at all.

Sometimes the automatic shutoffs on the pump wear out and it's awhile before the station owner figures out that there's a problem & fixes it.

Who knows though ... you can't assume. A 94 longbed setup might be completely different than a 92 shortbed.