Hydraulic Lifter Question...

[Greg]

How are new hydraulic lifters supposed to feel if you use a push rod to "pump them up"

Current Hydraulic Lifter Operation:
New Lifters:
They have been soaking for over a week in 10W40
You can still use a pushrod to compress them
I have tried using the push rod to pump them up to ensure they are filling with oil and the center plunger moves up and down about the same.

Old Lifters:
The plungers will not budge.
Out of curiousity I even tryed using a hammer and old push rod to see if I could get the plunger to move and nothing. The plunger is all the way at the top.
I took one apart and drained the oil from inside, wiped the insides clean and reassembled. Now the old lifter acts just like the new lifters with the plunger moving up and down when using a push rod to pump it.


Are the new lifters supposed to have this much movement? or are they just not absorbing the oil?

Also one of the new lifter's plungers does not go down as far as the other new ones?

Any leasons for the clueless?


Thanks,
Greg

 

[addo]

The odd-bod new one is the only piece I'd be concerned about. You could look for a shop with a lifter tester if you're otherwise worried.

 

[Anonymous]

the lifters will not pump up until they are supplied oil that is under pressure. just install them and they will pump up when you start the engine.

 

[CobraSix]

Most new lifters do not require being pumped up prior to installation as mentioned before.

Slade