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Old 12-14-2013   #1  
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Default whining noise when I start the engine

I have the triton 5.4 and I am getting a very loud whining noise when I start it. I have taken off the serpentine belt and replaced it checked all pulleys to see of they rocked which they didn't I am stumped..... only thing I can think of is that it may be an intake leak but the sound goes away after vehicle is warm. Any advice would be appreciated
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Old 12-15-2013   #2  
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Might be a vacuum leak. Use some carb and choke cleaner and sprary around all the hoses and fittings while the truck is running. If the engine speeds up when a spray and area, that hose or fitting needs to be replaced or tighten.
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Old 12-19-2013   #3  
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Keep driving and see if this problem increases or not. If not then try and take it to the dealer.(If you cant figure out the problem at all)
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