Hi everyone...... I recently replaced my head gaskets on my 97 monte 3.1 engine. The car overheated and blew the gaskets. Took heads to a machine shop, and had them pressure tested and milled. put car back together even noting the differient size push rods. when i went to start it it sound like there is no compression can the valve be misadjusted? the pistons move and so does the rocker arms. Im at a loss If anyone knows please let me know ....thanks

your motor has zero lash rocker arms. you tighten them to a specific torque value (20ft/lbs i think) so I don't think it's valve related. Have you checked the compression? Did you check the block for warpage with a straight edge? Give us a little more info as to what it's doing/not doing.

your motor has zero lash rocker arms. you tighten them to a specific torque value (20ft/lbs i think) so I don't think it's valve related. Have you checked the compression? Did you check the block for warpage with a straight edge? Give us a little more info as to what it's doing/not doing.
it just spins the motor was checked for being straight

did you actually check for compression yet?

did you actually check for compression yet?
yes it didnt even register on the gauge i know the pistons move and the rocker arms are moving :banghead:

is there a way i can check the timing chain without opening up the motor

if the rocker arms move, it's not a broken timing chain. The chain could be stretched, but it wouldn't cause zero compression. Either the valves are bent and not sealing, or you have some serious worn/broken rings. Do any of the cylinders have compression, or are they all zero?

you may want to have a cylinder leak down test done. that will tell you where you are losing all your compression at.