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

by in Mandan, ND on October 28, 2012
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2 answers
ANSWER by , October 28, 2012
check for a vacuum leak
ANSWER by , October 28, 2012
air whistling means that there is a vacuum leak...most likely at the intake air boot.