Collapsed Hyd Roller Lifters Q
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FTE Chapter Leader
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From: Central Mississippi
Collapsed Hyd Roller Lifters Q
Is it possible to collapse hydraulic lifters from lack of oil pressure to the point of them not being able to "pump" back up after pressure is restored? 
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FTE Chapter Leader
Joined: May 2006
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From: Central Mississippi
Oil pressure was lost for a few min, now the valve train has ratchety-ratchety (as best as I can describe) noise. Pressure is postively restored. No rod knock or piston slap from bottom end.
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From: Ottawa, Ontario
Why did the motor loose oil pressure? Like I said it's highly unlikely all the lifters would fail so it's more likely they are not getting oil pressure now because of a blockage or that some pushrods became displaced and got bent.
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I had a 95 302 roller that did the same thing , after cleaning the pick up & replace oil pump , the lifters pumped back up some but , allways made noise , but ran fine . I replaced the motor so i never took it apart so see what it looked like ...Lew
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