vacuum hose routing question

pauld · Aug 7, 2011

hi everyone ..
i have a1984 bronco2 2.8l automatic trans ...i have an open vacuum port right behind the electric choke ...i have checked the many vacuum hose diagrams available and can account for all the other vacuum lines ...this one is a mystery ...
is it suposed to be attached to a heat source like the gm quadrajet carbs ?
please see picture and maybe you can help...thanks paul

adsm08 · Aug 7, 2011

What picture?

pauld · Aug 7, 2011

you were too fast for me ...i had to resize the pictures..

adsm08 · Aug 7, 2011

I have no idea. Sure looks like it's for a choke heater, but that kinda seems to defeat the point of the electric choke stat if you have an exhaust choke stove.

I dunno

Twister · Aug 7, 2011

That's where my choke heater hose is on my 2100, but like adsm said it would be pointless with an electric choke.

pauld · Aug 8, 2011

thanks for the responses ....i'll look again tomorrow where it goes ..paul

unoleisu · Aug 8, 2011

I just looked at my old 85 BII sitting out in the yard, and it has the same thing, but the port is capped off with a rubber cap. It ran fine like that, when it was running. It may be that the carb is not original to the motor, as mine isn't. The choke heater may be for a different application.

pauld · Aug 8, 2011

it's a vacuum source for sure and goes to the choke housing...
when i bought the truck it had a hose connecting it to the main manifold vac source .........now it's getting capped ..thanks for the responses paul

vacuum hose routing question

pauld

10+ Year Member

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adsm08

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