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Engine sucking sound

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Old Jul 19, 2004 | 03:37 PM
  #1  
taekdown's Avatar
taekdown
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Question Engine sucking sound

Hey everyone!

Been reading here for a long time and finally had to ask a ? of my own. I have a 1993 F250 5.8L and I am starting to do small projects , well to my question I did a full tune up and when i tried to replace the fuel filter i could not get it off, well after all the work i did , plugs oil etc... My truck is running good but when i shut it off it makes a two second sucking sound. Like a big slurp by the back of the motor and i can not figure it out. Again it is after i shut it off.

Thank for letting me join, relly nice forum

Wayne from arizona
 
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Old Jul 19, 2004 | 04:44 PM
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EPNCSU2006
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Sounds like a vacuum source relieving vacuum after the engine is shut off. Listen for it with the engine running too, see if you can hear it and trace it down.
 
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Old Jul 19, 2004 | 08:11 PM
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It may be the purge valve letting the charcoal canister pull vapors off the engine.

Some models had a filter to clean the air as it was pulled into the vacuum system.

That may be the sound you hear.
 
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