Anybody know if there's a check valve other than one on brake booster?

 

are you saying the hose collapsed and you lost vacuum ?? There was vacuum at the motor end of the hose, but not the brake booster end ?

 

This air hose has a plastic core so I'm positive it's not collapsed. I'm trying to see if theirs a another check valve stuck somewhere else

 

the other end of the hose goes to the intake manifold or a fitting on it... Start the motor and see if there is vacuum at the fitting.. if not, remove it from the manifold. You have to have vacuum INSIDE the manifold or truck would not be running.

 

im gonna have to break down and pull intake again and check for missing fitting or something.

 

i must have vacuum in the manifold cause trucks running good

 

where does the hose connect to the manifold ? There must be some type fitting in the manifold that the hose clamps onto ? Maybe I don't understand, but why pull the manifold at this time ? Why not poke a thin screwdriver into the fitting and see if it is plugged or can the fitting be unscrewed from the manifold ?

 

May have to pull intake to see if something else came unplugged. Still unsure why brakes aren't working

 

What's the name of this hose circled?

 

Im not sure it has a real "name", other than " the vacuum hose on the back of the manifold"........... was it plugged or broken ?

 

Pinched shut, nothing seems to be working. Going to ford tomorrow

 

Update- found 90 degree hose for brake booster and now have vacuum there. Now truck will start but not run, have a coil pack H code and intake stuck shut code, what would cause intake to stick shut?

 

Did you unplug (and forget to reconnect) your IMRC motor when the manifold was off?

 

Imrc is plugged in

 

I spray brake cleaner towards back of intake and can keep truck running