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Skip426 · 07-31-2022, 04:38 PM

Quote:

Originally Posted by MartyMirabal

What's all this?

You posted these pictures while I was typing , I'll have a look .

Skip426 · 07-31-2022, 04:47 PM

OK : I can honestly say " I have NO IDEA !"

Someone mounted a radiator and electric fan from a small car to cool something ... but what , the hoses run towards the rear , if it was some how attached to the engine cooling system I could understand it .

Can you follow them to the point of origin ?

I can see the fuel filter in one picture , but that is not good hose for fuel , someone used RV water hose for fuel .

Skip426 · 07-31-2022, 05:03 PM

THIS IS NOT GOOD . Yellow box .

There has been RV water lines used as fuel hose , punched through the floor .

To me that indicates that fuel lines from the non factory tank and the change over valve maybe inside the RV .
This is a disaster just waiting to happen .

WHAT bad thing did you do to someone that they left you this mess .

MartyMirabal · 07-31-2022, 05:29 PM

I haven't really tried filling the rear tank so I don't know.

MartyMirabal · 07-31-2022, 05:39 PM

So gas is leaking out of the bottom but not out of that hose.

Skip426 · 07-31-2022, 05:43 PM

You need to get inside the RV in the area where the fuel lines are punched through the floor and find out what is going on in there .

I suspect you'll find a valve and a third hose from the added tank ,and fuel lines should never have been run inside the RV .

Skip426 · 07-31-2022, 05:50 PM

If there is fuel coming out of the hose ( center fitting marked tank ) ; either the tank is over full and the gauge doesn't show it , or there are issues with the way the evap hose is attached at the tank .

EG; connection for the tank vent to the filler neck and evap line reversed .

I have to BBQ supper so I'm off line for a while , please report what you find inside the RV for fuel lines I'll check in after supper.

MartyMirabal · 07-31-2022, 05:54 PM

...

MartyMirabal · 07-31-2022, 10:29 PM

It's not actually going threw the floor. It just looked like it it that photo.

Skip426 · 07-31-2022, 10:41 PM

Good grief !

I'll try and go through your picture one by one .
First picture , is a manual tank switching valve , and from my memory of that vintage undercarriage the handle looks to be under the drivers seat pedestal, or directly behind it , I can only make out two of the pedestal mounting bolts.

The small car radiator and fan ; now that I see the tubes attached to it go forward , is an attempt to add cooling system capacity possibly due to an overheating problem.

It looks like every where the person ran out of hose they used a fuel filter as a connector .

The original fuel line would have been in the clip next to the floor with the rear brake tube , probably rusted through and was replaced with whatever he had handy.

I'll finish this post now and review the photos again , I can't view them while I'm typing .

Skip426 · 07-31-2022, 11:14 PM

Ok ; does the fuel line I've marked with the red arrow go to the engine fuel pump ?

And where in all this are the hoses that attached to the vapor canister ?

The large fuel filter on the drivers side frame rail is in a factory position , at this point we can only assume it's attached to the small OEM tank .

Can you pull the fuel line off the filter and see how much fuel will siphon out of that tank ? If you can get 5 or more gallons out , then see if the fuel gauge moves.
The smaller fuel filter by the underslung radiator , MIGHT , be in a line that comes from the larger tank , but that would have to be investigated.

Skip426 · 07-31-2022, 11:35 PM

Marty ; I'm calling it a day , I'll check tomorrow , but after Monday I'll be away for 8/9 days .

If you do manage to siphon a quantity of fuel , then attach a hose direct from the large filter to the engine fuel pump .
Plug off any line that leaks fuel at the canister mount and try to start the engine . If the engine won't start , connect a hose direct to the fuel pump to a gas can to check the pump operation. .

I'll think on the situation in the morning and post any more ideas ; it took 50 years to get this poor unit into this condition , hopefully we can straighten it out quicker that that.