I just recently bought a 1982 F150 and I noticed that there is what looks to be a Check Valve just behind the carburetor with no hose connected to it. There are no disconnected hoses any where in the engine bay. Where would the hose connect to from the Check Valve?

 

Does it go to the intake manifold? I'm thinking this truck has an aftermarket intake manifold.

 

Maybe it used to have a smog pump?

 

Didn't the old trucks have a vacuum modulator for the auto trans?

 

It does not have a smog pump, but I do see where one could possibly mounted. Since it does not have one, nor cats and it has an after market intake manifold, maybe I just need to plug the check valve?

 

Does the engine run bad? Gas mileage suck? funny noises? If it aint broke,.........

 

I hear noise coming from the check valve. I think I'm just going to plug it or as someone had mentioned, get a kit that deletes the pipe altogether.