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Bad lifters???

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Old Jun 26, 2010 | 09:39 PM
  #1  
George90GTA's Avatar
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Joined: Jun 2008
Posts: 34
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From: Plymouth, CT
Car: 1990 GTA
Engine: 355
Bad lifters???

I pressed down on every pushrod by hand. 5 lifters can easily be moved down. I don't believe this is normal. I never beat on my engine. it has around 10,000 miles and is 6-7 years old. The car runs strong. no strange noises. Any ideas as to why this is? Do I replace??? I took the manifold off pressed in the lifters with my finger. it goes in about 1/4 inch very easily then starts to get tighter.
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Old Jun 28, 2010 | 12:25 PM
  #2  
Rolling Thunder's Avatar
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Joined: Mar 2008
Posts: 1,549
Likes: 1
From: CT
Car: 86 T/A, 83 Z/28
Engine: 5.0 TPI, 350 2 X 4 bbl
Transmission: 4 speed auto, 5 speed manual
Axle/Gears: 3.23 posi, 3.73 std
Re: Bad lifters???

Yes this is normal. All of these lifters will be able to be compressed but some of them are already being compressed against the forces of the valve spring acting on them as they try to open a valve. This means some will feel hard and other soft depending on which valves are working at that moment in time.
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Old Jun 28, 2010 | 02:37 PM
  #3  
ntomsheck's Avatar
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Joined: Jul 2006
Posts: 506
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Car: 1989 GTA
Engine: 350TPI w/ Speed Density
Transmission: 700r4
Axle/Gears: Borg warner 3.27
Re: Bad lifters???

^^What he said. They don't firm up until oil is flowing.
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Old Jun 28, 2010 | 07:10 PM
  #4  
George90GTA's Avatar
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Joined: Jun 2008
Posts: 34
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From: Plymouth, CT
Car: 1990 GTA
Engine: 355
Re: Bad lifters???

Thanks! So as oil is being fed through it, they will pump back up.
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Old Jun 28, 2010 | 07:15 PM
  #5  
George90GTA's Avatar
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Junior Member
 
Joined: Jun 2008
Posts: 34
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From: Plymouth, CT
Car: 1990 GTA
Engine: 355
Re: Bad lifters???

Thanks! So as oil is being fed through it, they will pump back up. When is a lifter considered bad?
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