Help- HW 5200 has 2 Fuel lines

[MercuryMarc]

I picked up another HW5200 to see if it runs any poorer than my first one. It's from a Vega- that's all I know.

Near the fuel line inlet tube is another tube that leaves the "ECS" which I believe is a fuel evaporation control system assembly. Not sure to what to do with this extra tube. Plug it maybe?

Any and all help appreciated.

(In case anyone is keeping track, I a assembling quite a collection of carbs for my 250, each one running slightly worse than the one it replaced....)

 

[MercuryMarc]

I edited the first post and added a pic of the two lines. Does anyone have any suggestions?

Thanks!

 

[JackFish]

That line would run to the purge cannister, I think.

 

[t-west]

When I purchased my 5200 from Stoveboldt that nozzle came capped off with a rubber stopper. I asked Tom about it and he said leave it that way, it's for something you won't use.

--tom

 

[JackFish]

I asked Tom about it and he said leave it that way, it's for something you won't use.--tom

That was informative of him!

 

[MercuryMarc]

THANKS!
I'll plug it and see what happens.
I have to confess that I took of my HW5200 and put back on my Holley 1 barrel 1940 (1 11/16ths throttle bore) with a manual choke, and there is no bog whatsoever at any range. It also does not "lag" when I stomp on the gas pedal when going at high speeds on the freeway. I did fabricate my own fast idle cam so that when I do run the choke on cold mornings in San Fancisco the idle speed increases a bit- that way I can set the regular idle speed throttle stop at a lower RPM.

 

[xctasy]

Regards your 5210 Weber from the Vega. It has a vapour purge line to reduce hydrocarbons for all post 1973 cars. The Pinto/Capri/Fox-car 2.0 and 2.3 has a little vapour line from off the side of the carb.

I asked Tom about it and he said leave it that way, it's for something you won't use.--tom

That was informative of him!

Too easy. If its a genunine imported Weber version of the 5200 Holley, its therefore a 32/36 Weber. In every one made after 1973, they had a special line on the float bowl entry. It's a fuel return line, also called a blead back line. The 32/36 carb is a 5200 Holley made in Italy. They have been used on cars with return lines to allow a maximum pump pressure of 3 psi. Europeans persist with low head fuel systems. Over in the US, the engineers who did the Pinto and Vega hated the idea, so its blocked of. The Holley Weber version of the carbs operate under 4 to 5 psi pressure without leaking.

Here is the European Weber 32/36 DGAV. If there was another pipe on it, they would breed!

I like Toms explaination. It's simple!

The less you say, the less problems you have!