Post by
float_6969 »
https://forums.nicoclub.com/float-6969-u780.html
Thu May 04, 2006 10:50 am
I'm fighting the same thing. I've changed out the lifters and it didn't fix it. I'm about 90% sure it's lifter noise because if I rev the motor up so the oil pressure increases, the noise stops. The only thing I can think is that I've got an oil feed to the head partially blocked, or somehow when I cleaned it out, an oil passage for the lifters got plugged up.