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Rattle

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Old Mar 9, 2013 | 09:58 PM
  #1  
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Rattle

I have a 94 F-150 5.8 . There is a loud rattle coming from behin the engine, It sounds like a valve or a solinoid opening and closing very fast. Anyone have a idea what this could be and if it is something that could cause a problem.
 
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Old Mar 9, 2013 | 10:03 PM
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From: Munger
cracked manifold or an exhaust leak some were doen the collector pipes
 
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Old Mar 9, 2013 | 10:18 PM
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I will try to check for that tomorrow, but it sounds more like it is right behind the intake. And it realy rattles faster than any exaust leak I've ever heard.
 
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Old Mar 9, 2013 | 10:49 PM
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It's probably your PCV valve rattling. That is what mine is.
 
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Old Mar 9, 2013 | 10:52 PM
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From: VA
Originally Posted by buzzy613
cracked manifold or an exhaust leak some were doen the collector pipes
This would be my first guess.

As already suggested, the PCV valve is a possibility too.

Good luck!
 
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Old Mar 9, 2013 | 11:20 PM
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If it is te PVC valve does that mean it needs replaced or is this normal?
 
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Old Mar 10, 2013 | 07:57 AM
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well mine doesnt rattle lol probable replace it
 
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Old Mar 10, 2013 | 12:00 PM
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Actually....it should rattle. I've found the aftermarket one to be noisier but probably because all the junk that was clogging my original from 184,000 miles.

INSPECTION
  • Shake positive crankcase ventilation valve and carefully inspect for splits or cracks.
  • If positive crankcase ventilation valve does not rattle or is damaged, replace positive crankcase ventilation valve.
 
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