Page 1 of 1

Fuel Hose diagram

Posted: Fri Jan 08, 2010 1:33 pm
by jklnhyde
On page TAV26 of the Parts Catalog, the carburetor fuel hose diagram clearly shows the fuel line being diverted twice with 'Y'-shaped splitters. Only one fuel line is seen leading away from this jumble--apparently this is the line that will feed the carb, but where is the fuel return line?
I cannot see the return line in the diagram at all, and I am in the process of routing my fuel lines properly, but I don't think the diagram is accurate;or is it?
Rick

Re: Fuel Hose diagram

Posted: Fri Jan 08, 2010 2:32 pm
by paso750
Rick, all diagrams don`t even show that the tank has a return line. Maybe in the first planning it didn`t have that. Routing like suggested would probably lower fuel pressure as the pump pumps against the flow. This may improve some Weber symptoms. If you don`t have a fuel pressure regulator I guess I would keep that setup and add another Y before the carb that goes to the fuel return input of the tank (that`s the rear one of the two)

Re: Fuel Hose diagram

Posted: Sat Jan 09, 2010 7:46 pm
by ducapaso
Former fuel tanks had only petcock fuel outlet and asmallpipe for vapour ventilation, so they needed the pipeline shown in the diagram.
Later pasos had the double fuel inlet/outlet as shown in a small label applied in the hidden part of the tank.

Re: Fuel Hose diagram

Posted: Sun Jan 10, 2010 9:59 am
by paso750
are you sure there were Pasos without a returne line input on the tank ? I have a quite early model and it has it, too.

Re: Fuel Hose diagram

Posted: Tue Jan 12, 2010 6:01 pm
by ducapaso
My yel dukess hasn't it and I had some trouble with fuel pressure because of that