How do you check for vacuum leak in the rubber hose for one of the system idle or fuel controls or an intake leak after the throttle body?
I have a 1998 4.6L V8. If oyu have any pics with arrows for what to check that would be great.
the scary way is to use carb or brake cleaner and spray lightly around hoses. the safe way is to use a smoke machine to push smoke into the intake while engine is off and it will show you your leak. most likely your leak is the little rubber 90degree elbow behind throttlebody, but i had a broken throttle body elbow bolt that caused mine
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