1972 240Z

I did a little searching and it seems to point to the vapor tank vent hoses....I think that is what they are called. It only drips out when you put more than 1/2 tank of gas into it.

Does this sound like the hoses to you guys?

Maybe the filler neck?

I also read that to replace the hoses you remove the inside access panel.....Where is this?

Behind the interior trim?

The trim panels are held in place by Plastic rivets....Is there a way to get them out without breaking the rivets?

Thanx in Advance

Jeff

Jeff, You are correct. Probably a faulty hose. The only way to know for sure is to remove the interior trim panel and inspect the hoses. The panel is the big plastic piece on your right side if you look in from the hatch area. To remove the rivets without breaking them take a small nail or a punch and push the center of the rivet through. Unfortunately some of these center posts will end up lost. Then using a flat screw driver you can remove the rivet. The panel comes out with a little gentle persuasion.

Good luck

Oh yea, don't smoke :classic:

I would also add that while you're in there, replace the hoses with fuel injection hose as they will last longer than regular fuel line. That is unless a 240 requires specially formed hoses.

If you do not smell gasoline inside the car, it is more likely to be the filler hose that has failed. If it was the vent hoses, you'd likely smell a molotov cocktail inside the car.

EDIT: Of course it could be a leak way low on a vent hose "before" they enter the passenger cabin.

Easiest way to check is to remove the access panel at the back of the right rear wheelwell so that you have good visability of the filler hose.

Let us know what you find.

Thanx

easiest way to check is to remove the access panel at the back of the right rear wheelwell so that you have good visability of the filler hose.

Carl, what is that access panel made out of? Mine is missing and was wondering about a replacement.

If it only drips with more than a half a tank then I think you probably have rust pin hole in tank (maybe sat for a long time with half a tank and rusted at that level).

Carl, what is that access panel made out of? Mine is missing and was wondering about a replacement.

Sheet metal. Don't know the gauge, but probably around 16 gauge. Here are some detail pictures of the access panel.

Thanks Carl.

On the 280Z, there is a plastic trim panel you have to remove. BUT, before you remove that plastic panel, you have to remove the hatch stru/support on that side.

nine out of ten reply were on target , only one said anything about a 280. I think that either you have a split in the filler neck part way up from the bottom or there is a hole in one of the vent lines. As Bambi said pull the shield and have a look , it is only held on by three sheet metal screws. After reviewing the drawing of the tank and hoses there is only one vent line of the three that could drip where you said the leak is driping . It is the small line that exits the tank just outboard of the sending unit. Are you smelling fumes inside the cabin of the car ? If you are by all means remove the trim pannel and check out the other hoses and the evap tank. I hope you dont need to replace the filler neck but if you do here is the part # 172-12-E8800 A hint to save the little pins that you must push out of the plastic ''rivets'' take a leg from a panty-hose and insert it into the hose of your shop vac and use it as a filter and vacume out the area, also if you have some 5/8'' heater hose , tape it in place and use it to get into the tight places. I found several pins form the past when the pannels were removed by others.

One more thing DO NOT USE WATER HOSE FOR THESE VENT LINES. Nappa has an asortment sizes of fuel line hose , hose that is ment for heater hose or vacume line is not of the compound compatable for gas. Hope this helps.