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Hydraulic Lifters - clean or replace?


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1996 2.5 DOHC -  finishing the head work and decided to bench test the assembly before installing.  Installed camshaft on intake  side to ensure valve assembly all working.  Found that one valve was not closing all the way.  Checked the lifter and it would not compress at all.  Disassemble and cleaned- compressing but I'm assuming it needs to be bled.

 

What's the best process to bleed them after cleaning?

 

With the year of the car, I'm hoping that cleaning will suffice but need to point out that this car had a broken exhaust valve.  I'm assuming that if the lifters  stick that there could be issues- no compression or interference?

 

Thanks!

 

 

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Should be a small ball-valve in the lifter and that's where the oil is fed into the lifter. Press the valve open with a small pick and try to depress the plunger of the lifter and see if oil comes out of the valve. The lifter should squeeze fairly easily. If it's stuck you can try soaking it in kerosene overnight and try to get it freed up.

 

It may need to be replaced, but those lifters are somewhat expensive IIRC, so I would try cleaning it first.

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