Post by
float_6969 »
https://forums.nicoclub.com/float-6969-u780.html
Wed Sep 17, 2008 7:38 am
If it's being caused by air being trapped in the lifter, it should work it self out. If it's being caused by a seized lifter, you'll have to isolate it and replace/repair it.
You might try draining your current oil, and putting some VERY thin oil in it. Something cheap if possible, as you're not going to keep it in the motor long. Start the motor up and just let it idle. Don't drive the car or rev it. After rebuilding the head on my wife's Miata, it took like 20-30 minutes of idling to get them to quiet down.