89 Iroc Z

I am finishing rebuilding the top half of my engine. I replace the hydraulic lifters because a few were stuck compressed. Anyway I set the valve lash on the new lifters (I am sure I did it right, I have done it many times before on my old lifters) but the valves don't open when rotating the engine the lifters are only compressing when I turn the engine with a wrench. When I turn the engine with the starter the valves go up down fine but the valves don't stay open when I stop cracking. Is this because they are new lifters? I hope you understand what I am saying.

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1989 Iroc-Z 5.7 350, Blue, T-Tops

Lightly Moded:
Edelbrock Headers, Rebuilt B&M 700R-4 Tranny, Higher Stall Torque Converter, Airfoil, 3.4 w\posi, K&N's, Ported & Polished Plenum
-- Blue LED Bakelite Dash & Climate Control
- I am just some 17 Year old spending every dollar I make on my car.

onebad82z

iTrader: (7)

The lifters need the oil pressure of a running motor to stay pumped up to open and close the valves correctly.With you turning it over by hand there is no oil pressure to accomplish this.They are fine.

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1982 Z28:355,4 Speed,Lots of bolt ons

[This message has been edited by onebad82z (edited December 11, 2001).]

AJ_92RS

89 Iroc Z,

I swipped that patriotic smiley face from you. I hope you don't mind. I gotta a sis' who's on the Navy.

It'll help me display my own patriotism!!!!!

Thanks,
AJ