I have a 2003 chevy monte carlo SS 3.8 .I just finished installing a atk motor from advanced auto parts.the problem is the lifters are noisey and sound like they are not pumping up.
I primed the engine before starting.engine has normal oil pressure but on initial start up the rockers and lifters are noisey.Maybe when this motor was built they forgot to install a oil gally plug?I let this engine run for about 10 minutes and noise is still there.LOW OIL PRESSURE LIGHT CAME ON AND OIL PRESSURE DROPPED TO 0!!! I shut engine off and started it back up and oil pressure returned to normal???? WEIRD!!fI had a simuliar problem with a ford small block and it was a oil galley plug.Anyone on here had a problem like this with their 3800? i paid $1900 for this motor and i am a bit upset about this problem!! I am thinking about sending this motor back..
Any input would be greatly appreciated