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

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

Asked by for the 2004 Ford F-350 Super Duty
check for a vacuum leak
1 more answer
air whistling means that there is a vacuum leak...most likely at the intake air boot.