2004 Ford F-350 Super Duty Q&A

2004 Ford F-350 Super Duty Question: my truck makes a whistling noise, that comes from the engine compartment.

seems to b coming from around where the carborator would be doesnt happen all the time and acts like it is a baloon and slowly stops when truck is shut off -
Answer 1
check for a vacuum leak -
Answer 2
air whistling means that there is a vacuum leak...most likely at the intake air boot. -