28/36 DHSA Carburetor hose guide

[Chadsorangespider]

I have a 1970 spider with what I believe is a 28/36 DHSA Carburetor. I recently have found one of the hoses has come loose and can not find a resource that shows were this hose is supposed to attach. Based on my research common places it will attach are charcoal canister, brake booster, and

Hopefully the photo link works

https://www.dropbox.com/s/55tsth8rnynsd ... b.jpg?dl=0

thanks in advance for any suggestions

[Chadsorangespider]

After doing some more research is there a chance that this is a vent hose and not supposed to be attached to anything?

[18Fiatsandcounting]

My apologies for missing your post... Yes, that hose you indicated is the vent hose for the float bowl, and it should connect to the side connection on the charcoal canister which for a 1970 spider was over by the battery. Although not ideal, it's not the end of the world if it's left open but you might get a fuel smell on occasion. The hose for the brake booster is larger and connects directly to the intake manifold, with a one-way valve somewhere along the length of the hose.

Other hoses to the 28/36 DHSA carb are fuel in (larger hose), fuel return (smaller hose), fast idle solenoid on the carb to the electrovalve on the firewall, and a bypass hose that connects from down near the primary throttle shaft to the air cleaner housing. And the bowl vent hose.

Hoses on the intake manifold are the one to the brake booster and a smaller, metered connection to the top connection on the charcoal canister.

-Bryan

[Chadsorangespider]

Thank you! very help and clear explanation.