Hi. So i'm new here and just need some help with my 8. recently the Air jet mixing hose started sucking way too much air like i can literally hear it. i changed the whole metal and rubber hoses all the way down to the origin connection on the Lower intake manifold. but still its sucking way too much. my fuel trims shoot up to +25 and I've smoke tested it left and right and i have no leaks. it is a fresh rebuild. about 100 miles on it so far. first it was running bad due to maf but then changed it. Next it ran rich and i changed the 02 sensors (both). Now im back to lean. i took the upper intake manifold off and re did all the gaskets and all the rest of the vacuum hoses and still that dang fuel trim wont go down unless i cap the Air Jet Mixing hose. I am at my limit with diagnosing it. I have a new SSV valve on its way since mine rattles like a broken for with 20 year old suspension. Spark plugs changed, Coils changed, Wires changed. oh and a new throttle body.

 

Did you check or change the oil injectors?

 

no i haven't touched them at all.

 

Where do you have to hose connected? It is an air bleed and should be connected before the throttle body so you shouldn't get a vac leak there unless the valves are stuck open all the time.

Check the valves and the air bleed lines from the distribution block to the oil injectors.

 

It’s this hose.

It’s connected how it should be but is sucking in way too much air and causing the fuel trims to skyrocket.

 

Tried to upload a pic of the diagram not sure it went through. But the solenoids are new as well.

 

Solenoids for the intake valves? That's unrelated, unless someone has joined all these things together. Possible your vacuum lines are routed incorrectly?

 

Triple checked everything they are correct. That’s what has me so puzzled. I’m taking injectors off next week when I change the SSV valve.